Home / 20,687,888.38-28,548,230.79-11,395,258.40

Finding the Fourth Proportional to 20,687,888.38, 28,548,230.79 and 11,395,258.40

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Solution

The fourth proportional to 20,687,888.38, 28,548,230.79 and 11,395,258.40 is: 15,724,875.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,888.38 : 28,548,230.79 = 11,395,258.40 : x
  2. Step 2: Convert to fraction form
    20,687,888.38/28,548,230.79 = 11,395,258.40/x
  3. Step 3: Cross multiply
    20,687,888.38x = 28,548,230.79 × 11,395,258.40
  4. Step 4: Simplify right side
    20,687,888.38x = 325,314,466,828,988.94
  5. Step 5: Solve for x
    x = 325,314,466,828,988.94/20,687,888.38
  6. Step 6: Final answer
    x = 15,724,875.39

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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.