Home / 30,108.42-45,140.31-18,264.90

Finding the Fourth Proportional to 30,108.42, 45,140.31 and 18,264.90

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Solution

The fourth proportional to 30,108.42, 45,140.31 and 18,264.90 is: 27,383.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.42 : 45,140.31 = 18,264.90 : x
  2. Step 2: Convert to fraction form
    30,108.42/45,140.31 = 18,264.90/x
  3. Step 3: Cross multiply
    30,108.42x = 45,140.31 × 18,264.90
  4. Step 4: Simplify right side
    30,108.42x = 824,483,248.12
  5. Step 5: Solve for x
    x = 824,483,248.12/30,108.42
  6. Step 6: Final answer
    x = 27,383.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.