Home / 11,385.19-15,711.15-6,349.65

Finding the Fourth Proportional to 11,385.19, 15,711.15 and 6,349.65

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Solution

The fourth proportional to 11,385.19, 15,711.15 and 6,349.65 is: 8,762.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.19 : 15,711.15 = 6,349.65 : x
  2. Step 2: Convert to fraction form
    11,385.19/15,711.15 = 6,349.65/x
  3. Step 3: Cross multiply
    11,385.19x = 15,711.15 × 6,349.65
  4. Step 4: Simplify right side
    11,385.19x = 99,760,303.60
  5. Step 5: Solve for x
    x = 99,760,303.60/11,385.19
  6. Step 6: Final answer
    x = 8,762.29

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Half scale
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Double scale
Find fourth proportional to 11,386.19, 15,712.53 and 6,350.65
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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.