Home / 21,098.67-29,089.69-13,531.65

Finding the Fourth Proportional to 21,098.67, 29,089.69 and 13,531.65

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Solution

The fourth proportional to 21,098.67, 29,089.69 and 13,531.65 is: 18,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.67 : 29,089.69 = 13,531.65 : x
  2. Step 2: Convert to fraction form
    21,098.67/29,089.69 = 13,531.65/x
  3. Step 3: Cross multiply
    21,098.67x = 29,089.69 × 13,531.65
  4. Step 4: Simplify right side
    21,098.67x = 393,631,503.69
  5. Step 5: Solve for x
    x = 393,631,503.69/21,098.67
  6. Step 6: Final answer
    x = 18,656.70

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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.