Home / 13,543.84-18,688.81-7,574.54

Finding the Fourth Proportional to 13,543.84, 18,688.81 and 7,574.54

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Solution

The fourth proportional to 13,543.84, 18,688.81 and 7,574.54 is: 10,451.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.84 : 18,688.81 = 7,574.54 : x
  2. Step 2: Convert to fraction form
    13,543.84/18,688.81 = 7,574.54/x
  3. Step 3: Cross multiply
    13,543.84x = 18,688.81 × 7,574.54
  4. Step 4: Simplify right side
    13,543.84x = 141,559,101.02
  5. Step 5: Solve for x
    x = 141,559,101.02/13,543.84
  6. Step 6: Final answer
    x = 10,451.92

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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.