Home / 20,877,878.79-28,812,133.40-12,057,170.52

Finding the Fourth Proportional to 20,877,878.79, 28,812,133.40 and 12,057,170.52

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Solution

The fourth proportional to 20,877,878.79, 28,812,133.40 and 12,057,170.52 is: 16,639,276.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877,878.79 : 28,812,133.40 = 12,057,170.52 : x
  2. Step 2: Convert to fraction form
    20,877,878.79/28,812,133.40 = 12,057,170.52/x
  3. Step 3: Cross multiply
    20,877,878.79x = 28,812,133.40 × 12,057,170.52
  4. Step 4: Simplify right side
    20,877,878.79x = 347,392,805,388,501.50
  5. Step 5: Solve for x
    x = 347,392,805,388,501.50/20,877,878.79
  6. Step 6: Final answer
    x = 16,639,276.86

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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.