Home / 15,488.29-21,373.89-8,775.16

Finding the Fourth Proportional to 15,488.29, 21,373.89 and 8,775.16

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Solution

The fourth proportional to 15,488.29, 21,373.89 and 8,775.16 is: 12,109.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.29 : 21,373.89 = 8,775.16 : x
  2. Step 2: Convert to fraction form
    15,488.29/21,373.89 = 8,775.16/x
  3. Step 3: Cross multiply
    15,488.29x = 21,373.89 × 8,775.16
  4. Step 4: Simplify right side
    15,488.29x = 187,559,251.14
  5. Step 5: Solve for x
    x = 187,559,251.14/15,488.29
  6. Step 6: Final answer
    x = 12,109.75

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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.