Home / 12,560.12-18,840.18-9,788.88

Finding the Fourth Proportional to 12,560.12, 18,840.18 and 9,788.88

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Solution

The fourth proportional to 12,560.12, 18,840.18 and 9,788.88 is: 14,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560.12 : 18,840.18 = 9,788.88 : x
  2. Step 2: Convert to fraction form
    12,560.12/18,840.18 = 9,788.88/x
  3. Step 3: Cross multiply
    12,560.12x = 18,840.18 × 9,788.88
  4. Step 4: Simplify right side
    12,560.12x = 184,424,261.20
  5. Step 5: Solve for x
    x = 184,424,261.20/12,560.12
  6. Step 6: Final answer
    x = 14,683.32

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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.