Home / 28,188,053.60-42,282,080.40-21,013,600.10

Finding the Fourth Proportional to 28,188,053.60, 42,282,080.40 and 21,013,600.10

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Solution

The fourth proportional to 28,188,053.60, 42,282,080.40 and 21,013,600.10 is: 31,520,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188,053.60 : 42,282,080.40 = 21,013,600.10 : x
  2. Step 2: Convert to fraction form
    28,188,053.60/42,282,080.40 = 21,013,600.10/x
  3. Step 3: Cross multiply
    28,188,053.60x = 42,282,080.40 × 21,013,600.10
  4. Step 4: Simplify right side
    28,188,053.60x = 888,498,728,921,648.12
  5. Step 5: Solve for x
    x = 888,498,728,921,648.12/28,188,053.60
  6. Step 6: Final answer
    x = 31,520,400.15

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1.5x scale

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.