Home / 13,442.18-18,547.34-9,136.76

Finding the Fourth Proportional to 13,442.18, 18,547.34 and 9,136.76

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Solution

The fourth proportional to 13,442.18, 18,547.34 and 9,136.76 is: 12,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.18 : 18,547.34 = 9,136.76 : x
  2. Step 2: Convert to fraction form
    13,442.18/18,547.34 = 9,136.76/x
  3. Step 3: Cross multiply
    13,442.18x = 18,547.34 × 9,136.76
  4. Step 4: Simplify right side
    13,442.18x = 169,462,594.22
  5. Step 5: Solve for x
    x = 169,462,594.22/13,442.18
  6. Step 6: Final answer
    x = 12,606.78

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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.