Home / 13,376.47-18,459.12-7,711.24

Finding the Fourth Proportional to 13,376.47, 18,459.12 and 7,711.24

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Solution

The fourth proportional to 13,376.47, 18,459.12 and 7,711.24 is: 10,641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.47 : 18,459.12 = 7,711.24 : x
  2. Step 2: Convert to fraction form
    13,376.47/18,459.12 = 7,711.24/x
  3. Step 3: Cross multiply
    13,376.47x = 18,459.12 × 7,711.24
  4. Step 4: Simplify right side
    13,376.47x = 142,342,704.51
  5. Step 5: Solve for x
    x = 142,342,704.51/13,376.47
  6. Step 6: Final answer
    x = 10,641.28

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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.