Home / 13,103,641.71-18,084,377.93-7,878,359.25

Finding the Fourth Proportional to 13,103,641.71, 18,084,377.93 and 7,878,359.25

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Solution

The fourth proportional to 13,103,641.71, 18,084,377.93 and 7,878,359.25 is: 10,872,948.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103,641.71 : 18,084,377.93 = 7,878,359.25 : x
  2. Step 2: Convert to fraction form
    13,103,641.71/18,084,377.93 = 7,878,359.25/x
  3. Step 3: Cross multiply
    13,103,641.71x = 18,084,377.93 × 7,878,359.25
  4. Step 4: Simplify right side
    13,103,641.71x = 142,475,226,105,919.56
  5. Step 5: Solve for x
    x = 142,475,226,105,919.56/13,103,641.71
  6. Step 6: Final answer
    x = 10,872,948.85

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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.