Home / 31,310.28-42,943.64-29,615.76

Finding the Fourth Proportional to 31,310.28, 42,943.64 and 29,615.76

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Solution

The fourth proportional to 31,310.28, 42,943.64 and 29,615.76 is: 40,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,310.28 : 42,943.64 = 29,615.76 : x
  2. Step 2: Convert to fraction form
    31,310.28/42,943.64 = 29,615.76/x
  3. Step 3: Cross multiply
    31,310.28x = 42,943.64 × 29,615.76
  4. Step 4: Simplify right side
    31,310.28x = 1,271,808,387.69
  5. Step 5: Solve for x
    x = 1,271,808,387.69/31,310.28
  6. Step 6: Final answer
    x = 40,619.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.