Home / 31,002.32-42,783.08-16,855.20

Finding the Fourth Proportional to 31,002.32, 42,783.08 and 16,855.20

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Solution

The fourth proportional to 31,002.32, 42,783.08 and 16,855.20 is: 23,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,002.32 : 42,783.08 = 16,855.20 : x
  2. Step 2: Convert to fraction form
    31,002.32/42,783.08 = 16,855.20/x
  3. Step 3: Cross multiply
    31,002.32x = 42,783.08 × 16,855.20
  4. Step 4: Simplify right side
    31,002.32x = 721,117,370.02
  5. Step 5: Solve for x
    x = 721,117,370.02/31,002.32
  6. Step 6: Final answer
    x = 23,260.11

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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.