Home / 28,117.13-38,801.70-15,541.88

Finding the Fourth Proportional to 28,117.13, 38,801.70 and 15,541.88

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Solution

The fourth proportional to 28,117.13, 38,801.70 and 15,541.88 is: 21,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.13 : 38,801.70 = 15,541.88 : x
  2. Step 2: Convert to fraction form
    28,117.13/38,801.70 = 15,541.88/x
  3. Step 3: Cross multiply
    28,117.13x = 38,801.70 × 15,541.88
  4. Step 4: Simplify right side
    28,117.13x = 603,051,171.19
  5. Step 5: Solve for x
    x = 603,051,171.19/28,117.13
  6. Step 6: Final answer
    x = 21,447.82

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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.