Home / 30,545.90-42,153.28-18,609.24

Finding the Fourth Proportional to 30,545.90, 42,153.28 and 18,609.24

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Solution

The fourth proportional to 30,545.90, 42,153.28 and 18,609.24 is: 25,680.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,545.90 : 42,153.28 = 18,609.24 : x
  2. Step 2: Convert to fraction form
    30,545.90/42,153.28 = 18,609.24/x
  3. Step 3: Cross multiply
    30,545.90x = 42,153.28 × 18,609.24
  4. Step 4: Simplify right side
    30,545.90x = 784,440,504.31
  5. Step 5: Solve for x
    x = 784,440,504.31/30,545.90
  6. Step 6: Final answer
    x = 25,680.71

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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.