Home / 12,554.76-18,820.35-4,228.95

Finding the Fourth Proportional to 12,554.76, 18,820.35 and 4,228.95

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Solution

The fourth proportional to 12,554.76, 18,820.35 and 4,228.95 is: 6,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554.76 : 18,820.35 = 4,228.95 : x
  2. Step 2: Convert to fraction form
    12,554.76/18,820.35 = 4,228.95/x
  3. Step 3: Cross multiply
    12,554.76x = 18,820.35 × 4,228.95
  4. Step 4: Simplify right side
    12,554.76x = 79,590,319.13
  5. Step 5: Solve for x
    x = 79,590,319.13/12,554.76
  6. Step 6: Final answer
    x = 6,339.45

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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.