Home / 12,456,871.80-18,685,307.70-11,449,102.20

Finding the Fourth Proportional to 12,456,871.80, 18,685,307.70 and 11,449,102.20

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Solution

The fourth proportional to 12,456,871.80, 18,685,307.70 and 11,449,102.20 is: 17,173,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,871.80 : 18,685,307.70 = 11,449,102.20 : x
  2. Step 2: Convert to fraction form
    12,456,871.80/18,685,307.70 = 11,449,102.20/x
  3. Step 3: Cross multiply
    12,456,871.80x = 18,685,307.70 × 11,449,102.20
  4. Step 4: Simplify right side
    12,456,871.80x = 213,929,997,495,746.91
  5. Step 5: Solve for x
    x = 213,929,997,495,746.91/12,456,871.80
  6. Step 6: Final answer
    x = 17,173,653.30

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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.