Home / 13,428.18-18,531.17-7,763.10

Finding the Fourth Proportional to 13,428.18, 18,531.17 and 7,763.10

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Solution

The fourth proportional to 13,428.18, 18,531.17 and 7,763.10 is: 10,713.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.18 : 18,531.17 = 7,763.10 : x
  2. Step 2: Convert to fraction form
    13,428.18/18,531.17 = 7,763.10/x
  3. Step 3: Cross multiply
    13,428.18x = 18,531.17 × 7,763.10
  4. Step 4: Simplify right side
    13,428.18x = 143,859,325.83
  5. Step 5: Solve for x
    x = 143,859,325.83/13,428.18
  6. Step 6: Final answer
    x = 10,713.24

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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.