Home / 12,931.40-17,852.15-8,704.68

Finding the Fourth Proportional to 12,931.40, 17,852.15 and 8,704.68

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Solution

The fourth proportional to 12,931.40, 17,852.15 and 8,704.68 is: 12,017.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.40 : 17,852.15 = 8,704.68 : x
  2. Step 2: Convert to fraction form
    12,931.40/17,852.15 = 8,704.68/x
  3. Step 3: Cross multiply
    12,931.40x = 17,852.15 × 8,704.68
  4. Step 4: Simplify right side
    12,931.40x = 155,397,209.54
  5. Step 5: Solve for x
    x = 155,397,209.54/12,931.40
  6. Step 6: Final answer
    x = 12,017.05

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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.