Home / 21,158.33-29,191.64-12,545.19

Finding the Fourth Proportional to 21,158.33, 29,191.64 and 12,545.19

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Solution

The fourth proportional to 21,158.33, 29,191.64 and 12,545.19 is: 17,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.33 : 29,191.64 = 12,545.19 : x
  2. Step 2: Convert to fraction form
    21,158.33/29,191.64 = 12,545.19/x
  3. Step 3: Cross multiply
    21,158.33x = 29,191.64 × 12,545.19
  4. Step 4: Simplify right side
    21,158.33x = 366,214,607.49
  5. Step 5: Solve for x
    x = 366,214,607.49/21,158.33
  6. Step 6: Final answer
    x = 17,308.30

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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.