Home / 31,127.79-42,905.13-22,056.20

Finding the Fourth Proportional to 31,127.79, 42,905.13 and 22,056.20

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Solution

The fourth proportional to 31,127.79, 42,905.13 and 22,056.20 is: 30,401.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,127.79 : 42,905.13 = 22,056.20 : x
  2. Step 2: Convert to fraction form
    31,127.79/42,905.13 = 22,056.20/x
  3. Step 3: Cross multiply
    31,127.79x = 42,905.13 × 22,056.20
  4. Step 4: Simplify right side
    31,127.79x = 946,323,913.78
  5. Step 5: Solve for x
    x = 946,323,913.78/31,127.79
  6. Step 6: Final answer
    x = 30,401.26

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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.