Home / 29,311.13-40,416.65-21,228.80

Finding the Fourth Proportional to 29,311.13, 40,416.65 and 21,228.80

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Solution

The fourth proportional to 29,311.13, 40,416.65 and 21,228.80 is: 29,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,311.13 : 40,416.65 = 21,228.80 : x
  2. Step 2: Convert to fraction form
    29,311.13/40,416.65 = 21,228.80/x
  3. Step 3: Cross multiply
    29,311.13x = 40,416.65 × 21,228.80
  4. Step 4: Simplify right side
    29,311.13x = 857,996,979.52
  5. Step 5: Solve for x
    x = 857,996,979.52/29,311.13
  6. Step 6: Final answer
    x = 29,272.05

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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.