Home / 20,865.95-28,794.59-14,907.75

Finding the Fourth Proportional to 20,865.95, 28,794.59 and 14,907.75

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Solution

The fourth proportional to 20,865.95, 28,794.59 and 14,907.75 is: 20,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.95 : 28,794.59 = 14,907.75 : x
  2. Step 2: Convert to fraction form
    20,865.95/28,794.59 = 14,907.75/x
  3. Step 3: Cross multiply
    20,865.95x = 28,794.59 × 14,907.75
  4. Step 4: Simplify right side
    20,865.95x = 429,262,422.46
  5. Step 5: Solve for x
    x = 429,262,422.46/20,865.95
  6. Step 6: Final answer
    x = 20,572.38

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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.