Home / 31,056.75-42,858.63-16,909.65

Finding the Fourth Proportional to 31,056.75, 42,858.63 and 16,909.65

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Solution

The fourth proportional to 31,056.75, 42,858.63 and 16,909.65 is: 23,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,056.75 : 42,858.63 = 16,909.65 : x
  2. Step 2: Convert to fraction form
    31,056.75/42,858.63 = 16,909.65/x
  3. Step 3: Cross multiply
    31,056.75x = 42,858.63 × 16,909.65
  4. Step 4: Simplify right side
    31,056.75x = 724,724,432.78
  5. Step 5: Solve for x
    x = 724,724,432.78/31,056.75
  6. Step 6: Final answer
    x = 23,335.49

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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.