Home / 15,428,213.61-21,290,822.23-8,458,776.21

Finding the Fourth Proportional to 15,428,213.61, 21,290,822.23 and 8,458,776.21

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Solution

The fourth proportional to 15,428,213.61, 21,290,822.23 and 8,458,776.21 is: 11,673,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428,213.61 : 21,290,822.23 = 8,458,776.21 : x
  2. Step 2: Convert to fraction form
    15,428,213.61/21,290,822.23 = 8,458,776.21/x
  3. Step 3: Cross multiply
    15,428,213.61x = 21,290,822.23 × 8,458,776.21
  4. Step 4: Simplify right side
    15,428,213.61x = 180,094,300,570,463.16
  5. Step 5: Solve for x
    x = 180,094,300,570,463.16/15,428,213.61
  6. Step 6: Final answer
    x = 11,673,049.46

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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.