Home / 30,985.34-42,749.66-18,061.65

Finding the Fourth Proportional to 30,985.34, 42,749.66 and 18,061.65

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Solution

The fourth proportional to 30,985.34, 42,749.66 and 18,061.65 is: 24,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.34 : 42,749.66 = 18,061.65 : x
  2. Step 2: Convert to fraction form
    30,985.34/42,749.66 = 18,061.65/x
  3. Step 3: Cross multiply
    30,985.34x = 42,749.66 × 18,061.65
  4. Step 4: Simplify right side
    30,985.34x = 772,129,340.10
  5. Step 5: Solve for x
    x = 772,129,340.10/30,985.34
  6. Step 6: Final answer
    x = 24,919.19

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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.