Home / 31,490,854.80-47,236,282.20-13,315,572.60

Finding the Fourth Proportional to 31,490,854.80, 47,236,282.20 and 13,315,572.60

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Solution

The fourth proportional to 31,490,854.80, 47,236,282.20 and 13,315,572.60 is: 19,973,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490,854.80 : 47,236,282.20 = 13,315,572.60 : x
  2. Step 2: Convert to fraction form
    31,490,854.80/47,236,282.20 = 13,315,572.60/x
  3. Step 3: Cross multiply
    31,490,854.80x = 47,236,282.20 × 13,315,572.60
  4. Step 4: Simplify right side
    31,490,854.80x = 628,978,144,988,187.75
  5. Step 5: Solve for x
    x = 628,978,144,988,187.75/31,490,854.80
  6. Step 6: Final answer
    x = 19,973,358.90

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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.