Home / 12,045.36-18,068.04-5,115

Finding the Fourth Proportional to 12,045.36, 18,068.04 and 5,115

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Solution

The fourth proportional to 12,045.36, 18,068.04 and 5,115 is: 7,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,045.36 : 18,068.04 = 5,115 : x
  2. Step 2: Convert to fraction form
    12,045.36/18,068.04 = 5,115/x
  3. Step 3: Cross multiply
    12,045.36x = 18,068.04 × 5,115
  4. Step 4: Simplify right side
    12,045.36x = 92,418,024.60
  5. Step 5: Solve for x
    x = 92,418,024.60/12,045.36
  6. Step 6: Final answer
    x = 7,672.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.