Home / 29,187.12-40,287.74-21,631.04

Finding the Fourth Proportional to 29,187.12, 40,287.74 and 21,631.04

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Solution

The fourth proportional to 29,187.12, 40,287.74 and 21,631.04 is: 29,857.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,187.12 : 40,287.74 = 21,631.04 : x
  2. Step 2: Convert to fraction form
    29,187.12/40,287.74 = 21,631.04/x
  3. Step 3: Cross multiply
    29,187.12x = 40,287.74 × 21,631.04
  4. Step 4: Simplify right side
    29,187.12x = 871,465,715.45
  5. Step 5: Solve for x
    x = 871,465,715.45/29,187.12
  6. Step 6: Final answer
    x = 29,857.89

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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.