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Finding the Fourth Proportional to 18,000,824.80, 26,959,246.80 and 17,640,018.40

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Solution

The fourth proportional to 18,000,824.80, 26,959,246.80 and 17,640,018.40 is: 26,418,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000,824.80 : 26,959,246.80 = 17,640,018.40 : x
  2. Step 2: Convert to fraction form
    18,000,824.80/26,959,246.80 = 17,640,018.40/x
  3. Step 3: Cross multiply
    18,000,824.80x = 26,959,246.80 × 17,640,018.40
  4. Step 4: Simplify right side
    18,000,824.80x = 475,561,609,602,141.06
  5. Step 5: Solve for x
    x = 475,561,609,602,141.06/18,000,824.80
  6. Step 6: Final answer
    x = 26,418,878.85

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1.5x scale

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.