Home / 31,756.30-43,820.53-18,331.87

Finding the Fourth Proportional to 31,756.30, 43,820.53 and 18,331.87

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Solution

The fourth proportional to 31,756.30, 43,820.53 and 18,331.87 is: 25,296.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,756.30 : 43,820.53 = 18,331.87 : x
  2. Step 2: Convert to fraction form
    31,756.30/43,820.53 = 18,331.87/x
  3. Step 3: Cross multiply
    31,756.30x = 43,820.53 × 18,331.87
  4. Step 4: Simplify right side
    31,756.30x = 803,312,463.58
  5. Step 5: Solve for x
    x = 803,312,463.58/31,756.30
  6. Step 6: Final answer
    x = 25,296.16

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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.