Home / 28,152.86-38,852.12-15,577.61

Finding the Fourth Proportional to 28,152.86, 38,852.12 and 15,577.61

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Solution

The fourth proportional to 28,152.86, 38,852.12 and 15,577.61 is: 21,497.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.86 : 38,852.12 = 15,577.61 : x
  2. Step 2: Convert to fraction form
    28,152.86/38,852.12 = 15,577.61/x
  3. Step 3: Cross multiply
    28,152.86x = 38,852.12 × 15,577.61
  4. Step 4: Simplify right side
    28,152.86x = 605,223,017.72
  5. Step 5: Solve for x
    x = 605,223,017.72/28,152.86
  6. Step 6: Final answer
    x = 21,497.75

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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.