Home / 28,449,672.60-42,674,508.90-21,275,219.10

Finding the Fourth Proportional to 28,449,672.60, 42,674,508.90 and 21,275,219.10

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Solution

The fourth proportional to 28,449,672.60, 42,674,508.90 and 21,275,219.10 is: 31,912,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449,672.60 : 42,674,508.90 = 21,275,219.10 : x
  2. Step 2: Convert to fraction form
    28,449,672.60/42,674,508.90 = 21,275,219.10/x
  3. Step 3: Cross multiply
    28,449,672.60x = 42,674,508.90 × 21,275,219.10
  4. Step 4: Simplify right side
    28,449,672.60x = 907,909,526,832,400
  5. Step 5: Solve for x
    x = 907,909,526,832,400/28,449,672.60
  6. Step 6: Final answer
    x = 31,912,828.65

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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.