Home / 14,278.65-21,420.02-4,418.70

Finding the Fourth Proportional to 14,278.65, 21,420.02 and 4,418.70

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Solution

The fourth proportional to 14,278.65, 21,420.02 and 4,418.70 is: 6,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.65 : 21,420.02 = 4,418.70 : x
  2. Step 2: Convert to fraction form
    14,278.65/21,420.02 = 4,418.70/x
  3. Step 3: Cross multiply
    14,278.65x = 21,420.02 × 4,418.70
  4. Step 4: Simplify right side
    14,278.65x = 94,648,642.37
  5. Step 5: Solve for x
    x = 94,648,642.37/14,278.65
  6. Step 6: Final answer
    x = 6,628.68

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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.