Home / 30,210.68-45,264.85-18,499.43

Finding the Fourth Proportional to 30,210.68, 45,264.85 and 18,499.43

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Solution

The fourth proportional to 30,210.68, 45,264.85 and 18,499.43 is: 27,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.68 : 45,264.85 = 18,499.43 : x
  2. Step 2: Convert to fraction form
    30,210.68/45,264.85 = 18,499.43/x
  3. Step 3: Cross multiply
    30,210.68x = 45,264.85 × 18,499.43
  4. Step 4: Simplify right side
    30,210.68x = 837,373,924.04
  5. Step 5: Solve for x
    x = 837,373,924.04/30,210.68
  6. Step 6: Final answer
    x = 27,717.81

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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.