Home / 42,401.79-63,604.04-21,330.32

Finding the Fourth Proportional to 42,401.79, 63,604.04 and 21,330.32

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Solution

The fourth proportional to 42,401.79, 63,604.04 and 21,330.32 is: 31,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,401.79 : 63,604.04 = 21,330.32 : x
  2. Step 2: Convert to fraction form
    42,401.79/63,604.04 = 21,330.32/x
  3. Step 3: Cross multiply
    42,401.79x = 63,604.04 × 21,330.32
  4. Step 4: Simplify right side
    42,401.79x = 1,356,694,101.82
  5. Step 5: Solve for x
    x = 1,356,694,101.82/42,401.79
  6. Step 6: Final answer
    x = 31,996.15

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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.