Home / 20,409.60-30,590.10-10,543.80

Finding the Fourth Proportional to 20,409.60, 30,590.10 and 10,543.80

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Solution

The fourth proportional to 20,409.60, 30,590.10 and 10,543.80 is: 15,803.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.60 : 30,590.10 = 10,543.80 : x
  2. Step 2: Convert to fraction form
    20,409.60/30,590.10 = 10,543.80/x
  3. Step 3: Cross multiply
    20,409.60x = 30,590.10 × 10,543.80
  4. Step 4: Simplify right side
    20,409.60x = 322,535,896.38
  5. Step 5: Solve for x
    x = 322,535,896.38/20,409.60
  6. Step 6: Final answer
    x = 15,803.15

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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.