Home / 15,493.04-21,377.60-9,119.12

Finding the Fourth Proportional to 15,493.04, 21,377.60 and 9,119.12

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Solution

The fourth proportional to 15,493.04, 21,377.60 and 9,119.12 is: 12,582.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.04 : 21,377.60 = 9,119.12 : x
  2. Step 2: Convert to fraction form
    15,493.04/21,377.60 = 9,119.12/x
  3. Step 3: Cross multiply
    15,493.04x = 21,377.60 × 9,119.12
  4. Step 4: Simplify right side
    15,493.04x = 194,944,899.71
  5. Step 5: Solve for x
    x = 194,944,899.71/15,493.04
  6. Step 6: Final answer
    x = 12,582.74

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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.