Home / 13,280.48-19,920.72-4,960.16

Finding the Fourth Proportional to 13,280.48, 19,920.72 and 4,960.16

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Solution

The fourth proportional to 13,280.48, 19,920.72 and 4,960.16 is: 7,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.48 : 19,920.72 = 4,960.16 : x
  2. Step 2: Convert to fraction form
    13,280.48/19,920.72 = 4,960.16/x
  3. Step 3: Cross multiply
    13,280.48x = 19,920.72 × 4,960.16
  4. Step 4: Simplify right side
    13,280.48x = 98,809,958.52
  5. Step 5: Solve for x
    x = 98,809,958.52/13,280.48
  6. Step 6: Final answer
    x = 7,440.24

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Half scale
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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.