Home / 21,838.16-30,140.66-14,291.18

Finding the Fourth Proportional to 21,838.16, 30,140.66 and 14,291.18

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Solution

The fourth proportional to 21,838.16, 30,140.66 and 14,291.18 is: 19,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.16 : 30,140.66 = 14,291.18 : x
  2. Step 2: Convert to fraction form
    21,838.16/30,140.66 = 14,291.18/x
  3. Step 3: Cross multiply
    21,838.16x = 30,140.66 × 14,291.18
  4. Step 4: Simplify right side
    21,838.16x = 430,745,684.58
  5. Step 5: Solve for x
    x = 430,745,684.58/21,838.16
  6. Step 6: Final answer
    x = 19,724.45

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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.