Home / 21,231.04-29,278.32-14,057.68

Finding the Fourth Proportional to 21,231.04, 29,278.32 and 14,057.68

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Solution

The fourth proportional to 21,231.04, 29,278.32 and 14,057.68 is: 19,386.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.04 : 29,278.32 = 14,057.68 : x
  2. Step 2: Convert to fraction form
    21,231.04/29,278.32 = 14,057.68/x
  3. Step 3: Cross multiply
    21,231.04x = 29,278.32 × 14,057.68
  4. Step 4: Simplify right side
    21,231.04x = 411,585,253.50
  5. Step 5: Solve for x
    x = 411,585,253.50/21,231.04
  6. Step 6: Final answer
    x = 19,386.01

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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.