Home / 28,432.16-42,643.20-16,731.68

Finding the Fourth Proportional to 28,432.16, 42,643.20 and 16,731.68

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Solution

The fourth proportional to 28,432.16, 42,643.20 and 16,731.68 is: 25,094.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.16 : 42,643.20 = 16,731.68 : x
  2. Step 2: Convert to fraction form
    28,432.16/42,643.20 = 16,731.68/x
  3. Step 3: Cross multiply
    28,432.16x = 42,643.20 × 16,731.68
  4. Step 4: Simplify right side
    28,432.16x = 713,492,376.58
  5. Step 5: Solve for x
    x = 713,492,376.58/28,432.16
  6. Step 6: Final answer
    x = 25,094.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.