Home / 15,381.27-21,228.86-14,680.07

Finding the Fourth Proportional to 15,381.27, 21,228.86 and 14,680.07

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Solution

The fourth proportional to 15,381.27, 21,228.86 and 14,680.07 is: 20,261.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.27 : 21,228.86 = 14,680.07 : x
  2. Step 2: Convert to fraction form
    15,381.27/21,228.86 = 14,680.07/x
  3. Step 3: Cross multiply
    15,381.27x = 21,228.86 × 14,680.07
  4. Step 4: Simplify right side
    15,381.27x = 311,640,971.28
  5. Step 5: Solve for x
    x = 311,640,971.28/15,381.27
  6. Step 6: Final answer
    x = 20,261.07

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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.