Home / 30,700.68-42,363.18-19,365.92

Finding the Fourth Proportional to 30,700.68, 42,363.18 and 19,365.92

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Solution

The fourth proportional to 30,700.68, 42,363.18 and 19,365.92 is: 26,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.68 : 42,363.18 = 19,365.92 : x
  2. Step 2: Convert to fraction form
    30,700.68/42,363.18 = 19,365.92/x
  3. Step 3: Cross multiply
    30,700.68x = 42,363.18 × 19,365.92
  4. Step 4: Simplify right side
    30,700.68x = 820,401,954.83
  5. Step 5: Solve for x
    x = 820,401,954.83/30,700.68
  6. Step 6: Final answer
    x = 26,722.60

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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.