Home / 28,731,229.88-39,649,934.57-15,679,329.50

Finding the Fourth Proportional to 28,731,229.88, 39,649,934.57 and 15,679,329.50

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Solution

The fourth proportional to 28,731,229.88, 39,649,934.57 and 15,679,329.50 is: 21,637,931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,229.88 : 39,649,934.57 = 15,679,329.50 : x
  2. Step 2: Convert to fraction form
    28,731,229.88/39,649,934.57 = 15,679,329.50/x
  3. Step 3: Cross multiply
    28,731,229.88x = 39,649,934.57 × 15,679,329.50
  4. Step 4: Simplify right side
    28,731,229.88x = 621,684,388,797,199
  5. Step 5: Solve for x
    x = 621,684,388,797,199/28,731,229.88
  6. Step 6: Final answer
    x = 21,637,931.67

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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.