Home / 12,921,702.06-17,832,068.43-7,120,691.40

Finding the Fourth Proportional to 12,921,702.06, 17,832,068.43 and 7,120,691.40

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Solution

The fourth proportional to 12,921,702.06, 17,832,068.43 and 7,120,691.40 is: 9,826,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,702.06 : 17,832,068.43 = 7,120,691.40 : x
  2. Step 2: Convert to fraction form
    12,921,702.06/17,832,068.43 = 7,120,691.40/x
  3. Step 3: Cross multiply
    12,921,702.06x = 17,832,068.43 × 7,120,691.40
  4. Step 4: Simplify right side
    12,921,702.06x = 126,976,656,313,712.50
  5. Step 5: Solve for x
    x = 126,976,656,313,712.50/12,921,702.06
  6. Step 6: Final answer
    x = 9,826,620.03

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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.