Home / 30,860.70-42,593.67-18,116.70

Finding the Fourth Proportional to 30,860.70, 42,593.67 and 18,116.70

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Solution

The fourth proportional to 30,860.70, 42,593.67 and 18,116.70 is: 25,004.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,860.70 : 42,593.67 = 18,116.70 : x
  2. Step 2: Convert to fraction form
    30,860.70/42,593.67 = 18,116.70/x
  3. Step 3: Cross multiply
    30,860.70x = 42,593.67 × 18,116.70
  4. Step 4: Simplify right side
    30,860.70x = 771,656,741.29
  5. Step 5: Solve for x
    x = 771,656,741.29/30,860.70
  6. Step 6: Final answer
    x = 25,004.51

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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.