Home / 22,881.86-31,560.68-20,999.52

Finding the Fourth Proportional to 22,881.86, 31,560.68 and 20,999.52

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Solution

The fourth proportional to 22,881.86, 31,560.68 and 20,999.52 is: 28,964.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,881.86 : 31,560.68 = 20,999.52 : x
  2. Step 2: Convert to fraction form
    22,881.86/31,560.68 = 20,999.52/x
  3. Step 3: Cross multiply
    22,881.86x = 31,560.68 × 20,999.52
  4. Step 4: Simplify right side
    22,881.86x = 662,759,130.87
  5. Step 5: Solve for x
    x = 662,759,130.87/22,881.86
  6. Step 6: Final answer
    x = 28,964.39

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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.