Home / 13,103,640.96-18,084,376.89-7,878,358.50

Finding the Fourth Proportional to 13,103,640.96, 18,084,376.89 and 7,878,358.50

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Solution

The fourth proportional to 13,103,640.96, 18,084,376.89 and 7,878,358.50 is: 10,872,947.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103,640.96 : 18,084,376.89 = 7,878,358.50 : x
  2. Step 2: Convert to fraction form
    13,103,640.96/18,084,376.89 = 7,878,358.50/x
  3. Step 3: Cross multiply
    13,103,640.96x = 18,084,376.89 × 7,878,358.50
  4. Step 4: Simplify right side
    13,103,640.96x = 142,475,204,388,535.06
  5. Step 5: Solve for x
    x = 142,475,204,388,535.06/13,103,640.96
  6. Step 6: Final answer
    x = 10,872,947.82

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1.5x scale

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.