Home / 18,866,940.40-28,235,092.20-11,299,337.20

Finding the Fourth Proportional to 18,866,940.40, 28,235,092.20 and 11,299,337.20

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Solution

The fourth proportional to 18,866,940.40, 28,235,092.20 and 11,299,337.20 is: 16,909,886.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866,940.40 : 28,235,092.20 = 11,299,337.20 : x
  2. Step 2: Convert to fraction form
    18,866,940.40/28,235,092.20 = 11,299,337.20/x
  3. Step 3: Cross multiply
    18,866,940.40x = 28,235,092.20 × 11,299,337.20
  4. Step 4: Simplify right side
    18,866,940.40x = 319,037,827,640,889.81
  5. Step 5: Solve for x
    x = 319,037,827,640,889.81/18,866,940.40
  6. Step 6: Final answer
    x = 16,909,886.86

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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.