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Finding the Fourth Proportional to 13,281.60, 19,900.48 and 8,071.68

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Solution

The fourth proportional to 13,281.60, 19,900.48 and 8,071.68 is: 12,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.60 : 19,900.48 = 8,071.68 : x
  2. Step 2: Convert to fraction form
    13,281.60/19,900.48 = 8,071.68/x
  3. Step 3: Cross multiply
    13,281.60x = 19,900.48 × 8,071.68
  4. Step 4: Simplify right side
    13,281.60x = 160,630,306.41
  5. Step 5: Solve for x
    x = 160,630,306.41/13,281.60
  6. Step 6: Final answer
    x = 12,094.20

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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.