Home / 21,177.65-29,225.31-11,746.22

Finding the Fourth Proportional to 21,177.65, 29,225.31 and 11,746.22

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Solution

The fourth proportional to 21,177.65, 29,225.31 and 11,746.22 is: 16,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.65 : 29,225.31 = 11,746.22 : x
  2. Step 2: Convert to fraction form
    21,177.65/29,225.31 = 11,746.22/x
  3. Step 3: Cross multiply
    21,177.65x = 29,225.31 × 11,746.22
  4. Step 4: Simplify right side
    21,177.65x = 343,286,730.65
  5. Step 5: Solve for x
    x = 343,286,730.65/21,177.65
  6. Step 6: Final answer
    x = 16,209.86

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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.