Home / 12,891,652.80-19,305,986.40-9,679,387.20

Finding the Fourth Proportional to 12,891,652.80, 19,305,986.40 and 9,679,387.20

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Solution

The fourth proportional to 12,891,652.80, 19,305,986.40 and 9,679,387.20 is: 14,495,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891,652.80 : 19,305,986.40 = 9,679,387.20 : x
  2. Step 2: Convert to fraction form
    12,891,652.80/19,305,986.40 = 9,679,387.20/x
  3. Step 3: Cross multiply
    12,891,652.80x = 19,305,986.40 × 9,679,387.20
  4. Step 4: Simplify right side
    12,891,652.80x = 186,870,117,643,534.06
  5. Step 5: Solve for x
    x = 186,870,117,643,534.06/12,891,652.80
  6. Step 6: Final answer
    x = 14,495,435.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.