Home / 18,138,837.71-25,033,364.12-13,547,187.47

Finding the Fourth Proportional to 18,138,837.71, 25,033,364.12 and 13,547,187.47

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Solution

The fourth proportional to 18,138,837.71, 25,033,364.12 and 13,547,187.47 is: 18,696,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138,837.71 : 25,033,364.12 = 13,547,187.47 : x
  2. Step 2: Convert to fraction form
    18,138,837.71/25,033,364.12 = 13,547,187.47/x
  3. Step 3: Cross multiply
    18,138,837.71x = 25,033,364.12 × 13,547,187.47
  4. Step 4: Simplify right side
    18,138,837.71x = 339,131,676,647,112.69
  5. Step 5: Solve for x
    x = 339,131,676,647,112.69/18,138,837.71
  6. Step 6: Final answer
    x = 18,696,439.22

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1.5x scale

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.