Home / 21,341,878.70-31,970,827.65-12,796,832.30

Finding the Fourth Proportional to 21,341,878.70, 31,970,827.65 and 12,796,832.30

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Solution

The fourth proportional to 21,341,878.70, 31,970,827.65 and 12,796,832.30 is: 19,170,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341,878.70 : 31,970,827.65 = 12,796,832.30 : x
  2. Step 2: Convert to fraction form
    21,341,878.70/31,970,827.65 = 12,796,832.30/x
  3. Step 3: Cross multiply
    21,341,878.70x = 31,970,827.65 × 12,796,832.30
  4. Step 4: Simplify right side
    21,341,878.70x = 409,125,319,929,253.12
  5. Step 5: Solve for x
    x = 409,125,319,929,253.12/21,341,878.70
  6. Step 6: Final answer
    x = 19,170,070.53

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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.