Home / 16,868.35-23,278.08-9,315

Finding the Fourth Proportional to 16,868.35, 23,278.08 and 9,315

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Solution

The fourth proportional to 16,868.35, 23,278.08 and 9,315 is: 12,854.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,868.35 : 23,278.08 = 9,315 : x
  2. Step 2: Convert to fraction form
    16,868.35/23,278.08 = 9,315/x
  3. Step 3: Cross multiply
    16,868.35x = 23,278.08 × 9,315
  4. Step 4: Simplify right side
    16,868.35x = 216,835,350.13
  5. Step 5: Solve for x
    x = 216,835,350.13/16,868.35
  6. Step 6: Final answer
    x = 12,854.57

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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.