Home / 20,213,639.50-27,894,822.54-11,512,621.72

Finding the Fourth Proportional to 20,213,639.50, 27,894,822.54 and 11,512,621.72

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Solution

The fourth proportional to 20,213,639.50, 27,894,822.54 and 11,512,621.72 is: 15,887,417.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,639.50 : 27,894,822.54 = 11,512,621.72 : x
  2. Step 2: Convert to fraction form
    20,213,639.50/27,894,822.54 = 11,512,621.72/x
  3. Step 3: Cross multiply
    20,213,639.50x = 27,894,822.54 × 11,512,621.72
  4. Step 4: Simplify right side
    20,213,639.50x = 321,142,539,849,549.56
  5. Step 5: Solve for x
    x = 321,142,539,849,549.56/20,213,639.50
  6. Step 6: Final answer
    x = 15,887,417.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.