Home / 28,866,913.88-43,254,310.98-21,154,816.40

Finding the Fourth Proportional to 28,866,913.88, 43,254,310.98 and 21,154,816.40

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Solution

The fourth proportional to 28,866,913.88, 43,254,310.98 and 21,154,816.40 is: 31,698,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866,913.88 : 43,254,310.98 = 21,154,816.40 : x
  2. Step 2: Convert to fraction form
    28,866,913.88/43,254,310.98 = 21,154,816.40/x
  3. Step 3: Cross multiply
    28,866,913.88x = 43,254,310.98 × 21,154,816.40
  4. Step 4: Simplify right side
    28,866,913.88x = 915,037,007,290,404
  5. Step 5: Solve for x
    x = 915,037,007,290,404/28,866,913.88
  6. Step 6: Final answer
    x = 31,698,470.13

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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.