Home / 31,487.36-43,461.23-21,432.62

Finding the Fourth Proportional to 31,487.36, 43,461.23 and 21,432.62

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Solution

The fourth proportional to 31,487.36, 43,461.23 and 21,432.62 is: 29,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.36 : 43,461.23 = 21,432.62 : x
  2. Step 2: Convert to fraction form
    31,487.36/43,461.23 = 21,432.62/x
  3. Step 3: Cross multiply
    31,487.36x = 43,461.23 × 21,432.62
  4. Step 4: Simplify right side
    31,487.36x = 931,488,028.81
  5. Step 5: Solve for x
    x = 931,488,028.81/31,487.36
  6. Step 6: Final answer
    x = 29,582.92

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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.