Home / 13,067,808.64-18,033,965.76-7,912,113.28

Finding the Fourth Proportional to 13,067,808.64, 18,033,965.76 and 7,912,113.28

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Solution

The fourth proportional to 13,067,808.64, 18,033,965.76 and 7,912,113.28 is: 10,918,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,067,808.64 : 18,033,965.76 = 7,912,113.28 : x
  2. Step 2: Convert to fraction form
    13,067,808.64/18,033,965.76 = 7,912,113.28/x
  3. Step 3: Cross multiply
    13,067,808.64x = 18,033,965.76 × 7,912,113.28
  4. Step 4: Simplify right side
    13,067,808.64x = 142,686,779,980,761.31
  5. Step 5: Solve for x
    x = 142,686,779,980,761.31/13,067,808.64
  6. Step 6: Final answer
    x = 10,918,952.36

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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.