Home / 12,220.58-16,864.76-6,915.29

Finding the Fourth Proportional to 12,220.58, 16,864.76 and 6,915.29

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Solution

The fourth proportional to 12,220.58, 16,864.76 and 6,915.29 is: 9,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.58 : 16,864.76 = 6,915.29 : x
  2. Step 2: Convert to fraction form
    12,220.58/16,864.76 = 6,915.29/x
  3. Step 3: Cross multiply
    12,220.58x = 16,864.76 × 6,915.29
  4. Step 4: Simplify right side
    12,220.58x = 116,624,587.28
  5. Step 5: Solve for x
    x = 116,624,587.28/12,220.58
  6. Step 6: Final answer
    x = 9,543.29

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Half scale
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Double scale
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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.