Home / 13,354.18-18,428.25-7,765.18

Finding the Fourth Proportional to 13,354.18, 18,428.25 and 7,765.18

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Solution

The fourth proportional to 13,354.18, 18,428.25 and 7,765.18 is: 10,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.18 : 18,428.25 = 7,765.18 : x
  2. Step 2: Convert to fraction form
    13,354.18/18,428.25 = 7,765.18/x
  3. Step 3: Cross multiply
    13,354.18x = 18,428.25 × 7,765.18
  4. Step 4: Simplify right side
    13,354.18x = 143,098,678.34
  5. Step 5: Solve for x
    x = 143,098,678.34/13,354.18
  6. Step 6: Final answer
    x = 10,715.65

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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.