Home / 29,125.11-40,139.35-21,153.49

Finding the Fourth Proportional to 29,125.11, 40,139.35 and 21,153.49

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Solution

The fourth proportional to 29,125.11, 40,139.35 and 21,153.49 is: 29,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,125.11 : 40,139.35 = 21,153.49 : x
  2. Step 2: Convert to fraction form
    29,125.11/40,139.35 = 21,153.49/x
  3. Step 3: Cross multiply
    29,125.11x = 40,139.35 × 21,153.49
  4. Step 4: Simplify right side
    29,125.11x = 849,087,338.83
  5. Step 5: Solve for x
    x = 849,087,338.83/29,125.11
  6. Step 6: Final answer
    x = 29,153.10

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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.