Home / 31,522.68-43,461.36-20,765.88

Finding the Fourth Proportional to 31,522.68, 43,461.36 and 20,765.88

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Solution

The fourth proportional to 31,522.68, 43,461.36 and 20,765.88 is: 28,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,522.68 : 43,461.36 = 20,765.88 : x
  2. Step 2: Convert to fraction form
    31,522.68/43,461.36 = 20,765.88/x
  3. Step 3: Cross multiply
    31,522.68x = 43,461.36 × 20,765.88
  4. Step 4: Simplify right side
    31,522.68x = 902,513,386.40
  5. Step 5: Solve for x
    x = 902,513,386.40/31,522.68
  6. Step 6: Final answer
    x = 28,630.60

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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.