Home / 13,587,578.16-18,751,373.60-7,787,479.20

Finding the Fourth Proportional to 13,587,578.16, 18,751,373.60 and 7,787,479.20

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Solution

The fourth proportional to 13,587,578.16, 18,751,373.60 and 7,787,479.20 is: 10,747,016.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587,578.16 : 18,751,373.60 = 7,787,479.20 : x
  2. Step 2: Convert to fraction form
    13,587,578.16/18,751,373.60 = 7,787,479.20/x
  3. Step 3: Cross multiply
    13,587,578.16x = 18,751,373.60 × 7,787,479.20
  4. Step 4: Simplify right side
    13,587,578.16x = 146,025,931,881,429.12
  5. Step 5: Solve for x
    x = 146,025,931,881,429.12/13,587,578.16
  6. Step 6: Final answer
    x = 10,747,016.88

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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.