Home / 19,680,839.80-29,525,406.90-8,315,438.20

Finding the Fourth Proportional to 19,680,839.80, 29,525,406.90 and 8,315,438.20

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Solution

The fourth proportional to 19,680,839.80, 29,525,406.90 and 8,315,438.20 is: 12,474,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680,839.80 : 29,525,406.90 = 8,315,438.20 : x
  2. Step 2: Convert to fraction form
    19,680,839.80/29,525,406.90 = 8,315,438.20/x
  3. Step 3: Cross multiply
    19,680,839.80x = 29,525,406.90 × 8,315,438.20
  4. Step 4: Simplify right side
    19,680,839.80x = 245,516,696,406,803.56
  5. Step 5: Solve for x
    x = 245,516,696,406,803.56/19,680,839.80
  6. Step 6: Final answer
    x = 12,474,909.55

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1.5x scale

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.