Home / 16,869.61-23,279.79-9,315.75

Finding the Fourth Proportional to 16,869.61, 23,279.79 and 9,315.75

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Solution

The fourth proportional to 16,869.61, 23,279.79 and 9,315.75 is: 12,855.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,869.61 : 23,279.79 = 9,315.75 : x
  2. Step 2: Convert to fraction form
    16,869.61/23,279.79 = 9,315.75/x
  3. Step 3: Cross multiply
    16,869.61x = 23,279.79 × 9,315.75
  4. Step 4: Simplify right side
    16,869.61x = 216,868,703.69
  5. Step 5: Solve for x
    x = 216,868,703.69/16,869.61
  6. Step 6: Final answer
    x = 12,855.59

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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.