Home / 13,557.28-18,707.46-7,588.78

Finding the Fourth Proportional to 13,557.28, 18,707.46 and 7,588.78

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Solution

The fourth proportional to 13,557.28, 18,707.46 and 7,588.78 is: 10,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.28 : 18,707.46 = 7,588.78 : x
  2. Step 2: Convert to fraction form
    13,557.28/18,707.46 = 7,588.78/x
  3. Step 3: Cross multiply
    13,557.28x = 18,707.46 × 7,588.78
  4. Step 4: Simplify right side
    13,557.28x = 141,966,798.30
  5. Step 5: Solve for x
    x = 141,966,798.30/13,557.28
  6. Step 6: Final answer
    x = 10,471.63

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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.