Home / 15,398.83-21,250.43-8,325.30

Finding the Fourth Proportional to 15,398.83, 21,250.43 and 8,325.30

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Solution

The fourth proportional to 15,398.83, 21,250.43 and 8,325.30 is: 11,488.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.83 : 21,250.43 = 8,325.30 : x
  2. Step 2: Convert to fraction form
    15,398.83/21,250.43 = 8,325.30/x
  3. Step 3: Cross multiply
    15,398.83x = 21,250.43 × 8,325.30
  4. Step 4: Simplify right side
    15,398.83x = 176,916,154.63
  5. Step 5: Solve for x
    x = 176,916,154.63/15,398.83
  6. Step 6: Final answer
    x = 11,488.94

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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.