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Finding the Fourth Proportional to 12,888.68, 19,337.64 and 7,952.60

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Solution

The fourth proportional to 12,888.68, 19,337.64 and 7,952.60 is: 11,931.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.68 : 19,337.64 = 7,952.60 : x
  2. Step 2: Convert to fraction form
    12,888.68/19,337.64 = 7,952.60/x
  3. Step 3: Cross multiply
    12,888.68x = 19,337.64 × 7,952.60
  4. Step 4: Simplify right side
    12,888.68x = 153,784,515.86
  5. Step 5: Solve for x
    x = 153,784,515.86/12,888.68
  6. Step 6: Final answer
    x = 11,931.75

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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.