Home / 28,943,882.71-39,942,636.72-15,891,987.00

Finding the Fourth Proportional to 28,943,882.71, 39,942,636.72 and 15,891,987.00

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Solution

The fourth proportional to 28,943,882.71, 39,942,636.72 and 15,891,987.00 is: 21,930,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,882.71 : 39,942,636.72 = 15,891,987.00 : x
  2. Step 2: Convert to fraction form
    28,943,882.71/39,942,636.72 = 15,891,987.00/x
  3. Step 3: Cross multiply
    28,943,882.71x = 39,942,636.72 × 15,891,987.00
  4. Step 4: Simplify right side
    28,943,882.71x = 634,767,863,342,509
  5. Step 5: Solve for x
    x = 634,767,863,342,509/28,943,882.71
  6. Step 6: Final answer
    x = 21,930,985.20

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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.