Home / 20,742,008.65-31,103,681.77-7,958,264.65

Finding the Fourth Proportional to 20,742,008.65, 31,103,681.77 and 7,958,264.65

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Solution

The fourth proportional to 20,742,008.65, 31,103,681.77 and 7,958,264.65 is: 11,933,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,008.65 : 31,103,681.77 = 7,958,264.65 : x
  2. Step 2: Convert to fraction form
    20,742,008.65/31,103,681.77 = 7,958,264.65/x
  3. Step 3: Cross multiply
    20,742,008.65x = 31,103,681.77 × 7,958,264.65
  4. Step 4: Simplify right side
    20,742,008.65x = 247,531,331,115,040.44
  5. Step 5: Solve for x
    x = 247,531,331,115,040.44/20,742,008.65
  6. Step 6: Final answer
    x = 11,933,816.79

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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.