Home / 13,290,242.63-18,340,542.18-7,178,671.13

Finding the Fourth Proportional to 13,290,242.63, 18,340,542.18 and 7,178,671.13

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Solution

The fourth proportional to 13,290,242.63, 18,340,542.18 and 7,178,671.13 is: 9,906,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,242.63 : 18,340,542.18 = 7,178,671.13 : x
  2. Step 2: Convert to fraction form
    13,290,242.63/18,340,542.18 = 7,178,671.13/x
  3. Step 3: Cross multiply
    13,290,242.63x = 18,340,542.18 × 7,178,671.13
  4. Step 4: Simplify right side
    13,290,242.63x = 131,660,720,564,410.55
  5. Step 5: Solve for x
    x = 131,660,720,564,410.55/13,290,242.63
  6. Step 6: Final answer
    x = 9,906,570.13

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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.