Home / 14,278.90-21,420.39-4,418.95

Finding the Fourth Proportional to 14,278.90, 21,420.39 and 4,418.95

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Solution

The fourth proportional to 14,278.90, 21,420.39 and 4,418.95 is: 6,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.90 : 21,420.39 = 4,418.95 : x
  2. Step 2: Convert to fraction form
    14,278.90/21,420.39 = 4,418.95/x
  3. Step 3: Cross multiply
    14,278.90x = 21,420.39 × 4,418.95
  4. Step 4: Simplify right side
    14,278.90x = 94,655,525.29
  5. Step 5: Solve for x
    x = 94,655,525.29/14,278.90
  6. Step 6: Final answer
    x = 6,629.05

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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.