Home / 13,290,320.66-18,340,643.16-7,178,749.16

Finding the Fourth Proportional to 13,290,320.66, 18,340,643.16 and 7,178,749.16

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Solution

The fourth proportional to 13,290,320.66, 18,340,643.16 and 7,178,749.16 is: 9,906,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,320.66 : 18,340,643.16 = 7,178,749.16 : x
  2. Step 2: Convert to fraction form
    13,290,320.66/18,340,643.16 = 7,178,749.16/x
  3. Step 3: Cross multiply
    13,290,320.66x = 18,340,643.16 × 7,178,749.16
  4. Step 4: Simplify right side
    13,290,320.66x = 131,662,876,587,006.53
  5. Step 5: Solve for x
    x = 131,662,876,587,006.53/13,290,320.66
  6. Step 6: Final answer
    x = 9,906,674.19

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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.