Home / 15,389.54-21,223.40-9,714.48

Finding the Fourth Proportional to 15,389.54, 21,223.40 and 9,714.48

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Solution

The fourth proportional to 15,389.54, 21,223.40 and 9,714.48 is: 13,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.54 : 21,223.40 = 9,714.48 : x
  2. Step 2: Convert to fraction form
    15,389.54/21,223.40 = 9,714.48/x
  3. Step 3: Cross multiply
    15,389.54x = 21,223.40 × 9,714.48
  4. Step 4: Simplify right side
    15,389.54x = 206,174,188.72
  5. Step 5: Solve for x
    x = 206,174,188.72/15,389.54
  6. Step 6: Final answer
    x = 13,397.03

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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.