Home / 14,378.42-21,569.44-3,990.18

Finding the Fourth Proportional to 14,378.42, 21,569.44 and 3,990.18

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Solution

The fourth proportional to 14,378.42, 21,569.44 and 3,990.18 is: 5,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.42 : 21,569.44 = 3,990.18 : x
  2. Step 2: Convert to fraction form
    14,378.42/21,569.44 = 3,990.18/x
  3. Step 3: Cross multiply
    14,378.42x = 21,569.44 × 3,990.18
  4. Step 4: Simplify right side
    14,378.42x = 86,065,948.10
  5. Step 5: Solve for x
    x = 86,065,948.10/14,378.42
  6. Step 6: Final answer
    x = 5,985.77

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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.