Home / 12,528.60-17,281.60-8,058.16

Finding the Fourth Proportional to 12,528.60, 17,281.60 and 8,058.16

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Solution

The fourth proportional to 12,528.60, 17,281.60 and 8,058.16 is: 11,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.60 : 17,281.60 = 8,058.16 : x
  2. Step 2: Convert to fraction form
    12,528.60/17,281.60 = 8,058.16/x
  3. Step 3: Cross multiply
    12,528.60x = 17,281.60 × 8,058.16
  4. Step 4: Simplify right side
    12,528.60x = 139,257,897.86
  5. Step 5: Solve for x
    x = 139,257,897.86/12,528.60
  6. Step 6: Final answer
    x = 11,115.20

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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.