Home / 42,403.23-63,614.09-12,820.31

Finding the Fourth Proportional to 42,403.23, 63,614.09 and 12,820.31

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Solution

The fourth proportional to 42,403.23, 63,614.09 and 12,820.31 is: 19,233.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,403.23 : 63,614.09 = 12,820.31 : x
  2. Step 2: Convert to fraction form
    42,403.23/63,614.09 = 12,820.31/x
  3. Step 3: Cross multiply
    42,403.23x = 63,614.09 × 12,820.31
  4. Step 4: Simplify right side
    42,403.23x = 815,551,972.00
  5. Step 5: Solve for x
    x = 815,551,972.00/42,403.23
  6. Step 6: Final answer
    x = 19,233.25

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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.