Home / 21,357.50-29,445.71-14,631.11

Finding the Fourth Proportional to 21,357.50, 29,445.71 and 14,631.11

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Solution

The fourth proportional to 21,357.50, 29,445.71 and 14,631.11 is: 20,171.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.50 : 29,445.71 = 14,631.11 : x
  2. Step 2: Convert to fraction form
    21,357.50/29,445.71 = 14,631.11/x
  3. Step 3: Cross multiply
    21,357.50x = 29,445.71 × 14,631.11
  4. Step 4: Simplify right side
    21,357.50x = 430,823,201.65
  5. Step 5: Solve for x
    x = 430,823,201.65/21,357.50
  6. Step 6: Final answer
    x = 20,171.99

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1.5x scale

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.