Home / 28,909.32-39,894.57-18,307.64

Finding the Fourth Proportional to 28,909.32, 39,894.57 and 18,307.64

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Solution

The fourth proportional to 28,909.32, 39,894.57 and 18,307.64 is: 25,264.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.32 : 39,894.57 = 18,307.64 : x
  2. Step 2: Convert to fraction form
    28,909.32/39,894.57 = 18,307.64/x
  3. Step 3: Cross multiply
    28,909.32x = 39,894.57 × 18,307.64
  4. Step 4: Simplify right side
    28,909.32x = 730,375,226.04
  5. Step 5: Solve for x
    x = 730,375,226.04/28,909.32
  6. Step 6: Final answer
    x = 25,264.35

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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.