Home / 15,872.70-21,898.68-9,160.03

Finding the Fourth Proportional to 15,872.70, 21,898.68 and 9,160.03

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Solution

The fourth proportional to 15,872.70, 21,898.68 and 9,160.03 is: 12,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.70 : 21,898.68 = 9,160.03 : x
  2. Step 2: Convert to fraction form
    15,872.70/21,898.68 = 9,160.03/x
  3. Step 3: Cross multiply
    15,872.70x = 21,898.68 × 9,160.03
  4. Step 4: Simplify right side
    15,872.70x = 200,592,565.76
  5. Step 5: Solve for x
    x = 200,592,565.76/15,872.70
  6. Step 6: Final answer
    x = 12,637.58

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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.