Home / 13,543.58-18,690.36-7,574.60

Finding the Fourth Proportional to 13,543.58, 18,690.36 and 7,574.60

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Solution

The fourth proportional to 13,543.58, 18,690.36 and 7,574.60 is: 10,453.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.58 : 18,690.36 = 7,574.60 : x
  2. Step 2: Convert to fraction form
    13,543.58/18,690.36 = 7,574.60/x
  3. Step 3: Cross multiply
    13,543.58x = 18,690.36 × 7,574.60
  4. Step 4: Simplify right side
    13,543.58x = 141,572,000.86
  5. Step 5: Solve for x
    x = 141,572,000.86/13,543.58
  6. Step 6: Final answer
    x = 10,453.07

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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.