Home / 13,424.97-18,526.47-7,457.20

Finding the Fourth Proportional to 13,424.97, 18,526.47 and 7,457.20

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Solution

The fourth proportional to 13,424.97, 18,526.47 and 7,457.20 is: 10,290.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.97 : 18,526.47 = 7,457.20 : x
  2. Step 2: Convert to fraction form
    13,424.97/18,526.47 = 7,457.20/x
  3. Step 3: Cross multiply
    13,424.97x = 18,526.47 × 7,457.20
  4. Step 4: Simplify right side
    13,424.97x = 138,155,517.80
  5. Step 5: Solve for x
    x = 138,155,517.80/13,424.97
  6. Step 6: Final answer
    x = 10,290.93

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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.