Home / 31,009.08-42,794.28-16,861.68

Finding the Fourth Proportional to 31,009.08, 42,794.28 and 16,861.68

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Solution

The fourth proportional to 31,009.08, 42,794.28 and 16,861.68 is: 23,270.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,009.08 : 42,794.28 = 16,861.68 : x
  2. Step 2: Convert to fraction form
    31,009.08/42,794.28 = 16,861.68/x
  3. Step 3: Cross multiply
    31,009.08x = 42,794.28 × 16,861.68
  4. Step 4: Simplify right side
    31,009.08x = 721,583,455.19
  5. Step 5: Solve for x
    x = 721,583,455.19/31,009.08
  6. Step 6: Final answer
    x = 23,270.07

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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.