Home / 15,384.60-21,223.22-13,256.46

Finding the Fourth Proportional to 15,384.60, 21,223.22 and 13,256.46

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Solution

The fourth proportional to 15,384.60, 21,223.22 and 13,256.46 is: 18,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.60 : 21,223.22 = 13,256.46 : x
  2. Step 2: Convert to fraction form
    15,384.60/21,223.22 = 13,256.46/x
  3. Step 3: Cross multiply
    15,384.60x = 21,223.22 × 13,256.46
  4. Step 4: Simplify right side
    15,384.60x = 281,344,700.72
  5. Step 5: Solve for x
    x = 281,344,700.72/15,384.60
  6. Step 6: Final answer
    x = 18,287.42

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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.