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Finding the Fourth Proportional to 26,385.84, 36,407.84 and 15,205.68

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Solution

The fourth proportional to 26,385.84, 36,407.84 and 15,205.68 is: 20,981.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,385.84 : 36,407.84 = 15,205.68 : x
  2. Step 2: Convert to fraction form
    26,385.84/36,407.84 = 15,205.68/x
  3. Step 3: Cross multiply
    26,385.84x = 36,407.84 × 15,205.68
  4. Step 4: Simplify right side
    26,385.84x = 553,605,964.53
  5. Step 5: Solve for x
    x = 553,605,964.53/26,385.84
  6. Step 6: Final answer
    x = 20,981.18

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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.