Home / 21,985.80-32,916.30-17,064.20

Finding the Fourth Proportional to 21,985.80, 32,916.30 and 17,064.20

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Solution

The fourth proportional to 21,985.80, 32,916.30 and 17,064.20 is: 25,547.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.80 : 32,916.30 = 17,064.20 : x
  2. Step 2: Convert to fraction form
    21,985.80/32,916.30 = 17,064.20/x
  3. Step 3: Cross multiply
    21,985.80x = 32,916.30 × 17,064.20
  4. Step 4: Simplify right side
    21,985.80x = 561,690,326.46
  5. Step 5: Solve for x
    x = 561,690,326.46/21,985.80
  6. Step 6: Final answer
    x = 25,547.87

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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.