Home / 28,122.50-38,809.86-15,548.06

Finding the Fourth Proportional to 28,122.50, 38,809.86 and 15,548.06

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Solution

The fourth proportional to 28,122.50, 38,809.86 and 15,548.06 is: 21,456.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.50 : 38,809.86 = 15,548.06 : x
  2. Step 2: Convert to fraction form
    28,122.50/38,809.86 = 15,548.06/x
  3. Step 3: Cross multiply
    28,122.50x = 38,809.86 × 15,548.06
  4. Step 4: Simplify right side
    28,122.50x = 603,418,031.87
  5. Step 5: Solve for x
    x = 603,418,031.87/28,122.50
  6. Step 6: Final answer
    x = 21,456.77

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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.