Home / 20,868,152.40-31,287,648.60-12,344,101.20

Finding the Fourth Proportional to 20,868,152.40, 31,287,648.60 and 12,344,101.20

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Solution

The fourth proportional to 20,868,152.40, 31,287,648.60 and 12,344,101.20 is: 18,507,527.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868,152.40 : 31,287,648.60 = 12,344,101.20 : x
  2. Step 2: Convert to fraction form
    20,868,152.40/31,287,648.60 = 12,344,101.20/x
  3. Step 3: Cross multiply
    20,868,152.40x = 31,287,648.60 × 12,344,101.20
  4. Step 4: Simplify right side
    20,868,152.40x = 386,217,900,628,438.31
  5. Step 5: Solve for x
    x = 386,217,900,628,438.31/20,868,152.40
  6. Step 6: Final answer
    x = 18,507,527.32

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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.