Home / 12,221.16-16,865.10-6,915.93

Finding the Fourth Proportional to 12,221.16, 16,865.10 and 6,915.93

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Solution

The fourth proportional to 12,221.16, 16,865.10 and 6,915.93 is: 9,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.16 : 16,865.10 = 6,915.93 : x
  2. Step 2: Convert to fraction form
    12,221.16/16,865.10 = 6,915.93/x
  3. Step 3: Cross multiply
    12,221.16x = 16,865.10 × 6,915.93
  4. Step 4: Simplify right side
    12,221.16x = 116,637,851.04
  5. Step 5: Solve for x
    x = 116,637,851.04/12,221.16
  6. Step 6: Final answer
    x = 9,543.93

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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.