Home / 20,957.14-31,416.18-14,386.42

Finding the Fourth Proportional to 20,957.14, 31,416.18 and 14,386.42

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Solution

The fourth proportional to 20,957.14, 31,416.18 and 14,386.42 is: 21,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.14 : 31,416.18 = 14,386.42 : x
  2. Step 2: Convert to fraction form
    20,957.14/31,416.18 = 14,386.42/x
  3. Step 3: Cross multiply
    20,957.14x = 31,416.18 × 14,386.42
  4. Step 4: Simplify right side
    20,957.14x = 451,966,360.28
  5. Step 5: Solve for x
    x = 451,966,360.28/20,957.14
  6. Step 6: Final answer
    x = 21,566.22

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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.