Home / 42,270.90-63,406.98-20,086.56

Finding the Fourth Proportional to 42,270.90, 63,406.98 and 20,086.56

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Solution

The fourth proportional to 42,270.90, 63,406.98 and 20,086.56 is: 30,130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,270.90 : 63,406.98 = 20,086.56 : x
  2. Step 2: Convert to fraction form
    42,270.90/63,406.98 = 20,086.56/x
  3. Step 3: Cross multiply
    42,270.90x = 63,406.98 × 20,086.56
  4. Step 4: Simplify right side
    42,270.90x = 1,273,628,108.19
  5. Step 5: Solve for x
    x = 1,273,628,108.19/42,270.90
  6. Step 6: Final answer
    x = 30,130.14

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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.