Home / 21,613.10-32,367.40-17,887.91

Finding the Fourth Proportional to 21,613.10, 32,367.40 and 17,887.91

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Solution

The fourth proportional to 21,613.10, 32,367.40 and 17,887.91 is: 26,788.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.10 : 32,367.40 = 17,887.91 : x
  2. Step 2: Convert to fraction form
    21,613.10/32,367.40 = 17,887.91/x
  3. Step 3: Cross multiply
    21,613.10x = 32,367.40 × 17,887.91
  4. Step 4: Simplify right side
    21,613.10x = 578,984,931.58
  5. Step 5: Solve for x
    x = 578,984,931.58/21,613.10
  6. Step 6: Final answer
    x = 26,788.62

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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.