Home / 21,976,043.40-32,978,061.90-12,878,123.40

Finding the Fourth Proportional to 21,976,043.40, 32,978,061.90 and 12,878,123.40

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Solution

The fourth proportional to 21,976,043.40, 32,978,061.90 and 12,878,123.40 is: 19,325,387.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976,043.40 : 32,978,061.90 = 12,878,123.40 : x
  2. Step 2: Convert to fraction form
    21,976,043.40/32,978,061.90 = 12,878,123.40/x
  3. Step 3: Cross multiply
    21,976,043.40x = 32,978,061.90 × 12,878,123.40
  4. Step 4: Simplify right side
    21,976,043.40x = 424,695,550,641,038.44
  5. Step 5: Solve for x
    x = 424,695,550,641,038.44/21,976,043.40
  6. Step 6: Final answer
    x = 19,325,387.33

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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.