Home / 30,943.77-42,700.47-18,199.18

Finding the Fourth Proportional to 30,943.77, 42,700.47 and 18,199.18

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Solution

The fourth proportional to 30,943.77, 42,700.47 and 18,199.18 is: 25,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,943.77 : 42,700.47 = 18,199.18 : x
  2. Step 2: Convert to fraction form
    30,943.77/42,700.47 = 18,199.18/x
  3. Step 3: Cross multiply
    30,943.77x = 42,700.47 × 18,199.18
  4. Step 4: Simplify right side
    30,943.77x = 777,113,524.74
  5. Step 5: Solve for x
    x = 777,113,524.74/30,943.77
  6. Step 6: Final answer
    x = 25,113.73

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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.