Home / 12,981.08-17,913.90-7,012.75

Finding the Fourth Proportional to 12,981.08, 17,913.90 and 7,012.75

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Solution

The fourth proportional to 12,981.08, 17,913.90 and 7,012.75 is: 9,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.08 : 17,913.90 = 7,012.75 : x
  2. Step 2: Convert to fraction form
    12,981.08/17,913.90 = 7,012.75/x
  3. Step 3: Cross multiply
    12,981.08x = 17,913.90 × 7,012.75
  4. Step 4: Simplify right side
    12,981.08x = 125,625,702.23
  5. Step 5: Solve for x
    x = 125,625,702.23/12,981.08
  6. Step 6: Final answer
    x = 9,677.60

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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.