Home / 13,543.28-18,689.64-7,574.92

Finding the Fourth Proportional to 13,543.28, 18,689.64 and 7,574.92

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Solution

The fourth proportional to 13,543.28, 18,689.64 and 7,574.92 is: 10,453.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.28 : 18,689.64 = 7,574.92 : x
  2. Step 2: Convert to fraction form
    13,543.28/18,689.64 = 7,574.92/x
  3. Step 3: Cross multiply
    13,543.28x = 18,689.64 × 7,574.92
  4. Step 4: Simplify right side
    13,543.28x = 141,572,527.83
  5. Step 5: Solve for x
    x = 141,572,527.83/13,543.28
  6. Step 6: Final answer
    x = 10,453.34

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Half scale
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Double scale
Find fourth proportional to 13,544.28, 18,691.02 and 7,575.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.