Home / 27,911.71-38,518.60-15,165.15

Finding the Fourth Proportional to 27,911.71, 38,518.60 and 15,165.15

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Solution

The fourth proportional to 27,911.71, 38,518.60 and 15,165.15 is: 20,928.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.71 : 38,518.60 = 15,165.15 : x
  2. Step 2: Convert to fraction form
    27,911.71/38,518.60 = 15,165.15/x
  3. Step 3: Cross multiply
    27,911.71x = 38,518.60 × 15,165.15
  4. Step 4: Simplify right side
    27,911.71x = 584,140,154.20
  5. Step 5: Solve for x
    x = 584,140,154.20/27,911.71
  6. Step 6: Final answer
    x = 20,928.14

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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.