Home / 26,800.60-36,981.32-15,315.20

Finding the Fourth Proportional to 26,800.60, 36,981.32 and 15,315.20

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Solution

The fourth proportional to 26,800.60, 36,981.32 and 15,315.20 is: 21,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,800.60 : 36,981.32 = 15,315.20 : x
  2. Step 2: Convert to fraction form
    26,800.60/36,981.32 = 15,315.20/x
  3. Step 3: Cross multiply
    26,800.60x = 36,981.32 × 15,315.20
  4. Step 4: Simplify right side
    26,800.60x = 566,376,312.06
  5. Step 5: Solve for x
    x = 566,376,312.06/26,800.60
  6. Step 6: Final answer
    x = 21,132.97

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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.