Home / 21,308,209.20-31,925,572.20-9,925,311.60

Finding the Fourth Proportional to 21,308,209.20, 31,925,572.20 and 9,925,311.60

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Solution

The fourth proportional to 21,308,209.20, 31,925,572.20 and 9,925,311.60 is: 14,870,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308,209.20 : 31,925,572.20 = 9,925,311.60 : x
  2. Step 2: Convert to fraction form
    21,308,209.20/31,925,572.20 = 9,925,311.60/x
  3. Step 3: Cross multiply
    21,308,209.20x = 31,925,572.20 × 9,925,311.60
  4. Step 4: Simplify right side
    21,308,209.20x = 316,871,252,093,297.50
  5. Step 5: Solve for x
    x = 316,871,252,093,297.50/21,308,209.20
  6. Step 6: Final answer
    x = 14,870,853.25

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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.