Home / 28,008.30-38,650.95-15,261.57

Finding the Fourth Proportional to 28,008.30, 38,650.95 and 15,261.57

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Solution

The fourth proportional to 28,008.30, 38,650.95 and 15,261.57 is: 21,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.30 : 38,650.95 = 15,261.57 : x
  2. Step 2: Convert to fraction form
    28,008.30/38,650.95 = 15,261.57/x
  3. Step 3: Cross multiply
    28,008.30x = 38,650.95 × 15,261.57
  4. Step 4: Simplify right side
    28,008.30x = 589,873,985.74
  5. Step 5: Solve for x
    x = 589,873,985.74/28,008.30
  6. Step 6: Final answer
    x = 21,060.69

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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.