Home / 20,694,689.60-31,042,034.40-18,679,150.40

Finding the Fourth Proportional to 20,694,689.60, 31,042,034.40 and 18,679,150.40

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Solution

The fourth proportional to 20,694,689.60, 31,042,034.40 and 18,679,150.40 is: 28,018,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694,689.60 : 31,042,034.40 = 18,679,150.40 : x
  2. Step 2: Convert to fraction form
    20,694,689.60/31,042,034.40 = 18,679,150.40/x
  3. Step 3: Cross multiply
    20,694,689.60x = 31,042,034.40 × 18,679,150.40
  4. Step 4: Simplify right side
    20,694,689.60x = 579,838,829,279,573.62
  5. Step 5: Solve for x
    x = 579,838,829,279,573.62/20,694,689.60
  6. Step 6: Final answer
    x = 28,018,725.60

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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.