Home / 18,721,921.80-28,082,882.70-15,852,140.40

Finding the Fourth Proportional to 18,721,921.80, 28,082,882.70 and 15,852,140.40

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Solution

The fourth proportional to 18,721,921.80, 28,082,882.70 and 15,852,140.40 is: 23,778,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,921.80 : 28,082,882.70 = 15,852,140.40 : x
  2. Step 2: Convert to fraction form
    18,721,921.80/28,082,882.70 = 15,852,140.40/x
  3. Step 3: Cross multiply
    18,721,921.80x = 28,082,882.70 × 15,852,140.40
  4. Step 4: Simplify right side
    18,721,921.80x = 445,173,799,397,131.06
  5. Step 5: Solve for x
    x = 445,173,799,397,131.06/18,721,921.80
  6. Step 6: Final answer
    x = 23,778,210.60

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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.