Home / 28,038.92-38,693.56-15,291.87

Finding the Fourth Proportional to 28,038.92, 38,693.56 and 15,291.87

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Solution

The fourth proportional to 28,038.92, 38,693.56 and 15,291.87 is: 21,102.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.92 : 38,693.56 = 15,291.87 : x
  2. Step 2: Convert to fraction form
    28,038.92/38,693.56 = 15,291.87/x
  3. Step 3: Cross multiply
    28,038.92x = 38,693.56 × 15,291.87
  4. Step 4: Simplify right side
    28,038.92x = 591,696,695.89
  5. Step 5: Solve for x
    x = 591,696,695.89/28,038.92
  6. Step 6: Final answer
    x = 21,102.69

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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.