Home / 20,782.23-28,669.51-15,108.18

Finding the Fourth Proportional to 20,782.23, 28,669.51 and 15,108.18

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Solution

The fourth proportional to 20,782.23, 28,669.51 and 15,108.18 is: 20,842.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.23 : 28,669.51 = 15,108.18 : x
  2. Step 2: Convert to fraction form
    20,782.23/28,669.51 = 15,108.18/x
  3. Step 3: Cross multiply
    20,782.23x = 28,669.51 × 15,108.18
  4. Step 4: Simplify right side
    20,782.23x = 433,144,117.59
  5. Step 5: Solve for x
    x = 433,144,117.59/20,782.23
  6. Step 6: Final answer
    x = 20,842.04

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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.