Home / 12,791,019.60-19,161,646.20-7,727,288.40

Finding the Fourth Proportional to 12,791,019.60, 19,161,646.20 and 7,727,288.40

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Solution

The fourth proportional to 12,791,019.60, 19,161,646.20 and 7,727,288.40 is: 11,575,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791,019.60 : 19,161,646.20 = 7,727,288.40 : x
  2. Step 2: Convert to fraction form
    12,791,019.60/19,161,646.20 = 7,727,288.40/x
  3. Step 3: Cross multiply
    12,791,019.60x = 19,161,646.20 × 7,727,288.40
  4. Step 4: Simplify right side
    12,791,019.60x = 148,067,566,406,164.09
  5. Step 5: Solve for x
    x = 148,067,566,406,164.09/12,791,019.60
  6. Step 6: Final answer
    x = 11,575,900.20

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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.