Home / 28,217.07-38,931.68-22,230.16

Finding the Fourth Proportional to 28,217.07, 38,931.68 and 22,230.16

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Solution

The fourth proportional to 28,217.07, 38,931.68 and 22,230.16 is: 30,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.07 : 38,931.68 = 22,230.16 : x
  2. Step 2: Convert to fraction form
    28,217.07/38,931.68 = 22,230.16/x
  3. Step 3: Cross multiply
    28,217.07x = 38,931.68 × 22,230.16
  4. Step 4: Simplify right side
    28,217.07x = 865,457,169.66
  5. Step 5: Solve for x
    x = 865,457,169.66/28,217.07
  6. Step 6: Final answer
    x = 30,671.40

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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.