Home / 9,620.40-13,276.11-5,428.65

Finding the Fourth Proportional to 9,620.40, 13,276.11 and 5,428.65

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Solution

The fourth proportional to 9,620.40, 13,276.11 and 5,428.65 is: 7,491.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.40 : 13,276.11 = 5,428.65 : x
  2. Step 2: Convert to fraction form
    9,620.40/13,276.11 = 5,428.65/x
  3. Step 3: Cross multiply
    9,620.40x = 13,276.11 × 5,428.65
  4. Step 4: Simplify right side
    9,620.40x = 72,071,354.55
  5. Step 5: Solve for x
    x = 72,071,354.55/9,620.40
  6. Step 6: Final answer
    x = 7,491.51

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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.