Home / 15,489.19-21,363.19-10,445.42

Finding the Fourth Proportional to 15,489.19, 21,363.19 and 10,445.42

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Solution

The fourth proportional to 15,489.19, 21,363.19 and 10,445.42 is: 14,406.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.19 : 21,363.19 = 10,445.42 : x
  2. Step 2: Convert to fraction form
    15,489.19/21,363.19 = 10,445.42/x
  3. Step 3: Cross multiply
    15,489.19x = 21,363.19 × 10,445.42
  4. Step 4: Simplify right side
    15,489.19x = 223,147,492.09
  5. Step 5: Solve for x
    x = 223,147,492.09/15,489.19
  6. Step 6: Final answer
    x = 14,406.66

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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.