Home / 15,223.50-21,009.24-9,254.20

Finding the Fourth Proportional to 15,223.50, 21,009.24 and 9,254.20

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Solution

The fourth proportional to 15,223.50, 21,009.24 and 9,254.20 is: 12,771.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.50 : 21,009.24 = 9,254.20 : x
  2. Step 2: Convert to fraction form
    15,223.50/21,009.24 = 9,254.20/x
  3. Step 3: Cross multiply
    15,223.50x = 21,009.24 × 9,254.20
  4. Step 4: Simplify right side
    15,223.50x = 194,423,708.81
  5. Step 5: Solve for x
    x = 194,423,708.81/15,223.50
  6. Step 6: Final answer
    x = 12,771.29

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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.