Home / 28,730,770.95-39,649,305.20-15,678,870.87

Finding the Fourth Proportional to 28,730,770.95, 39,649,305.20 and 15,678,870.87

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Solution

The fourth proportional to 28,730,770.95, 39,649,305.20 and 15,678,870.87 is: 21,637,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730,770.95 : 39,649,305.20 = 15,678,870.87 : x
  2. Step 2: Convert to fraction form
    28,730,770.95/39,649,305.20 = 15,678,870.87/x
  3. Step 3: Cross multiply
    28,730,770.95x = 39,649,305.20 × 15,678,870.87
  4. Step 4: Simplify right side
    28,730,770.95x = 621,656,336,237,625.12
  5. Step 5: Solve for x
    x = 621,656,336,237,625.12/28,730,770.95
  6. Step 6: Final answer
    x = 21,637,300.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.