Home / 15,469.42-21,337.23-9,877.90

Finding the Fourth Proportional to 15,469.42, 21,337.23 and 9,877.90

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Solution

The fourth proportional to 15,469.42, 21,337.23 and 9,877.90 is: 13,624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.42 : 21,337.23 = 9,877.90 : x
  2. Step 2: Convert to fraction form
    15,469.42/21,337.23 = 9,877.90/x
  3. Step 3: Cross multiply
    15,469.42x = 21,337.23 × 9,877.90
  4. Step 4: Simplify right side
    15,469.42x = 210,767,024.22
  5. Step 5: Solve for x
    x = 210,767,024.22/15,469.42
  6. Step 6: Final answer
    x = 13,624.75

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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.