Home / 19,680,838.80-29,525,405.40-8,315,437.20

Finding the Fourth Proportional to 19,680,838.80, 29,525,405.40 and 8,315,437.20

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Solution

The fourth proportional to 19,680,838.80, 29,525,405.40 and 8,315,437.20 is: 12,474,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680,838.80 : 29,525,405.40 = 8,315,437.20 : x
  2. Step 2: Convert to fraction form
    19,680,838.80/29,525,405.40 = 8,315,437.20/x
  3. Step 3: Cross multiply
    19,680,838.80x = 29,525,405.40 × 8,315,437.20
  4. Step 4: Simplify right side
    19,680,838.80x = 245,516,654,408,240.88
  5. Step 5: Solve for x
    x = 245,516,654,408,240.88/19,680,838.80
  6. Step 6: Final answer
    x = 12,474,908.05

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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.