Home / 21,523.13-29,707.78-13,969.02

Finding the Fourth Proportional to 21,523.13, 29,707.78 and 13,969.02

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Solution

The fourth proportional to 21,523.13, 29,707.78 and 13,969.02 is: 19,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.13 : 29,707.78 = 13,969.02 : x
  2. Step 2: Convert to fraction form
    21,523.13/29,707.78 = 13,969.02/x
  3. Step 3: Cross multiply
    21,523.13x = 29,707.78 × 13,969.02
  4. Step 4: Simplify right side
    21,523.13x = 414,988,572.98
  5. Step 5: Solve for x
    x = 414,988,572.98/21,523.13
  6. Step 6: Final answer
    x = 19,281.05

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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.