Home / 12,977.45-17,909.27-7,312.28

Finding the Fourth Proportional to 12,977.45, 17,909.27 and 7,312.28

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Solution

The fourth proportional to 12,977.45, 17,909.27 and 7,312.28 is: 10,091.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.45 : 17,909.27 = 7,312.28 : x
  2. Step 2: Convert to fraction form
    12,977.45/17,909.27 = 7,312.28/x
  3. Step 3: Cross multiply
    12,977.45x = 17,909.27 × 7,312.28
  4. Step 4: Simplify right side
    12,977.45x = 130,957,498.15
  5. Step 5: Solve for x
    x = 130,957,498.15/12,977.45
  6. Step 6: Final answer
    x = 10,091.16

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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.