Home / 30,925.71-42,677.30-16,778.25

Finding the Fourth Proportional to 30,925.71, 42,677.30 and 16,778.25

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Solution

The fourth proportional to 30,925.71, 42,677.30 and 16,778.25 is: 23,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,925.71 : 42,677.30 = 16,778.25 : x
  2. Step 2: Convert to fraction form
    30,925.71/42,677.30 = 16,778.25/x
  3. Step 3: Cross multiply
    30,925.71x = 42,677.30 × 16,778.25
  4. Step 4: Simplify right side
    30,925.71x = 716,050,324.83
  5. Step 5: Solve for x
    x = 716,050,324.83/30,925.71
  6. Step 6: Final answer
    x = 23,153.88

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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.