Home / 16,389.33-22,617.29-9,315.75

Finding the Fourth Proportional to 16,389.33, 22,617.29 and 9,315.75

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Solution

The fourth proportional to 16,389.33, 22,617.29 and 9,315.75 is: 12,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,389.33 : 22,617.29 = 9,315.75 : x
  2. Step 2: Convert to fraction form
    16,389.33/22,617.29 = 9,315.75/x
  3. Step 3: Cross multiply
    16,389.33x = 22,617.29 × 9,315.75
  4. Step 4: Simplify right side
    16,389.33x = 210,696,972.74
  5. Step 5: Solve for x
    x = 210,696,972.74/16,389.33
  6. Step 6: Final answer
    x = 12,855.74

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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.