Home / 28,346.13-39,117.71-15,770.88

Finding the Fourth Proportional to 28,346.13, 39,117.71 and 15,770.88

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Solution

The fourth proportional to 28,346.13, 39,117.71 and 15,770.88 is: 21,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,346.13 : 39,117.71 = 15,770.88 : x
  2. Step 2: Convert to fraction form
    28,346.13/39,117.71 = 15,770.88/x
  3. Step 3: Cross multiply
    28,346.13x = 39,117.71 × 15,770.88
  4. Step 4: Simplify right side
    28,346.13x = 616,920,631.43
  5. Step 5: Solve for x
    x = 616,920,631.43/28,346.13
  6. Step 6: Final answer
    x = 21,763.84

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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.