Home / 12,977.39-17,909.15-7,941.51

Finding the Fourth Proportional to 12,977.39, 17,909.15 and 7,941.51

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Solution

The fourth proportional to 12,977.39, 17,909.15 and 7,941.51 is: 10,959.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.39 : 17,909.15 = 7,941.51 : x
  2. Step 2: Convert to fraction form
    12,977.39/17,909.15 = 7,941.51/x
  3. Step 3: Cross multiply
    12,977.39x = 17,909.15 × 7,941.51
  4. Step 4: Simplify right side
    12,977.39x = 142,225,654.11
  5. Step 5: Solve for x
    x = 142,225,654.11/12,977.39
  6. Step 6: Final answer
    x = 10,959.49

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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.