Home / 20,556.28-28,360.08-13,492.30

Finding the Fourth Proportional to 20,556.28, 28,360.08 and 13,492.30

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Solution

The fourth proportional to 20,556.28, 28,360.08 and 13,492.30 is: 18,614.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.28 : 28,360.08 = 13,492.30 : x
  2. Step 2: Convert to fraction form
    20,556.28/28,360.08 = 13,492.30/x
  3. Step 3: Cross multiply
    20,556.28x = 28,360.08 × 13,492.30
  4. Step 4: Simplify right side
    20,556.28x = 382,642,707.38
  5. Step 5: Solve for x
    x = 382,642,707.38/20,556.28
  6. Step 6: Final answer
    x = 18,614.39

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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.