Home / 13,778.25-19,014.12-7,490.76

Finding the Fourth Proportional to 13,778.25, 19,014.12 and 7,490.76

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Solution

The fourth proportional to 13,778.25, 19,014.12 and 7,490.76 is: 10,337.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.25 : 19,014.12 = 7,490.76 : x
  2. Step 2: Convert to fraction form
    13,778.25/19,014.12 = 7,490.76/x
  3. Step 3: Cross multiply
    13,778.25x = 19,014.12 × 7,490.76
  4. Step 4: Simplify right side
    13,778.25x = 142,430,209.53
  5. Step 5: Solve for x
    x = 142,430,209.53/13,778.25
  6. Step 6: Final answer
    x = 10,337.32

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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.