Home / 12,478,538.20-18,703,061.70-5,290,058.20

Finding the Fourth Proportional to 12,478,538.20, 18,703,061.70 and 5,290,058.20

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Solution

The fourth proportional to 12,478,538.20, 18,703,061.70 and 5,290,058.20 is: 7,928,836.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,538.20 : 18,703,061.70 = 5,290,058.20 : x
  2. Step 2: Convert to fraction form
    12,478,538.20/18,703,061.70 = 5,290,058.20/x
  3. Step 3: Cross multiply
    12,478,538.20x = 18,703,061.70 × 5,290,058.20
  4. Step 4: Simplify right side
    12,478,538.20x = 98,940,284,911,190.94
  5. Step 5: Solve for x
    x = 98,940,284,911,190.94/12,478,538.20
  6. Step 6: Final answer
    x = 7,928,836.16

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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.