Home / 28,471,291.05-39,290,176.28-15,418,247.16

Finding the Fourth Proportional to 28,471,291.05, 39,290,176.28 and 15,418,247.16

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Solution

The fourth proportional to 28,471,291.05, 39,290,176.28 and 15,418,247.16 is: 21,277,069.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471,291.05 : 39,290,176.28 = 15,418,247.16 : x
  2. Step 2: Convert to fraction form
    28,471,291.05/39,290,176.28 = 15,418,247.16/x
  3. Step 3: Cross multiply
    28,471,291.05x = 39,290,176.28 × 15,418,247.16
  4. Step 4: Simplify right side
    28,471,291.05x = 605,785,648,767,918.12
  5. Step 5: Solve for x
    x = 605,785,648,767,918.12/28,471,291.05
  6. Step 6: Final answer
    x = 21,277,069.86

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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.