Home / 28,579.66-42,869.49-13,001.74

Finding the Fourth Proportional to 28,579.66, 42,869.49 and 13,001.74

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Solution

The fourth proportional to 28,579.66, 42,869.49 and 13,001.74 is: 19,502.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.66 : 42,869.49 = 13,001.74 : x
  2. Step 2: Convert to fraction form
    28,579.66/42,869.49 = 13,001.74/x
  3. Step 3: Cross multiply
    28,579.66x = 42,869.49 × 13,001.74
  4. Step 4: Simplify right side
    28,579.66x = 557,377,962.91
  5. Step 5: Solve for x
    x = 557,377,962.91/28,579.66
  6. Step 6: Final answer
    x = 19,502.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.