Home / 19,680,612.80-29,525,066.40-8,315,211.20

Finding the Fourth Proportional to 19,680,612.80, 29,525,066.40 and 8,315,211.20

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Solution

The fourth proportional to 19,680,612.80, 29,525,066.40 and 8,315,211.20 is: 12,474,569.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680,612.80 : 29,525,066.40 = 8,315,211.20 : x
  2. Step 2: Convert to fraction form
    19,680,612.80/29,525,066.40 = 8,315,211.20/x
  3. Step 3: Cross multiply
    19,680,612.80x = 29,525,066.40 × 8,315,211.20
  4. Step 4: Simplify right side
    19,680,612.80x = 245,507,162,810,023.69
  5. Step 5: Solve for x
    x = 245,507,162,810,023.69/19,680,612.80
  6. Step 6: Final answer
    x = 12,474,569.02

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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.