Home / 21,430.86-32,195.70-20,545.13

Finding the Fourth Proportional to 21,430.86, 32,195.70 and 20,545.13

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Solution

The fourth proportional to 21,430.86, 32,195.70 and 20,545.13 is: 30,865.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.86 : 32,195.70 = 20,545.13 : x
  2. Step 2: Convert to fraction form
    21,430.86/32,195.70 = 20,545.13/x
  3. Step 3: Cross multiply
    21,430.86x = 32,195.70 × 20,545.13
  4. Step 4: Simplify right side
    21,430.86x = 661,464,680.96
  5. Step 5: Solve for x
    x = 661,464,680.96/21,430.86
  6. Step 6: Final answer
    x = 30,865.06

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1.5x scale

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.