Home / 28,171,972.80-42,257,959.20-21,786,807.60

Finding the Fourth Proportional to 28,171,972.80, 42,257,959.20 and 21,786,807.60

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Solution

The fourth proportional to 28,171,972.80, 42,257,959.20 and 21,786,807.60 is: 32,680,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171,972.80 : 42,257,959.20 = 21,786,807.60 : x
  2. Step 2: Convert to fraction form
    28,171,972.80/42,257,959.20 = 21,786,807.60/x
  3. Step 3: Cross multiply
    28,171,972.80x = 42,257,959.20 × 21,786,807.60
  4. Step 4: Simplify right side
    28,171,972.80x = 920,666,026,659,050
  5. Step 5: Solve for x
    x = 920,666,026,659,050/28,171,972.80
  6. Step 6: Final answer
    x = 32,680,211.40

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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.