Home / 16,988.16-23,443.50-9,915.66

Finding the Fourth Proportional to 16,988.16, 23,443.50 and 9,915.66

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Solution

The fourth proportional to 16,988.16, 23,443.50 and 9,915.66 is: 13,683.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.16 : 23,443.50 = 9,915.66 : x
  2. Step 2: Convert to fraction form
    16,988.16/23,443.50 = 9,915.66/x
  3. Step 3: Cross multiply
    16,988.16x = 23,443.50 × 9,915.66
  4. Step 4: Simplify right side
    16,988.16x = 232,457,775.21
  5. Step 5: Solve for x
    x = 232,457,775.21/16,988.16
  6. Step 6: Final answer
    x = 13,683.52

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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.