Home / 21,545.58-29,740.50-18,206.14

Finding the Fourth Proportional to 21,545.58, 29,740.50 and 18,206.14

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Solution

The fourth proportional to 21,545.58, 29,740.50 and 18,206.14 is: 25,130.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.58 : 29,740.50 = 18,206.14 : x
  2. Step 2: Convert to fraction form
    21,545.58/29,740.50 = 18,206.14/x
  3. Step 3: Cross multiply
    21,545.58x = 29,740.50 × 18,206.14
  4. Step 4: Simplify right side
    21,545.58x = 541,459,706.67
  5. Step 5: Solve for x
    x = 541,459,706.67/21,545.58
  6. Step 6: Final answer
    x = 25,130.89

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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.