Home / 21,019.52-29,005.12-11,586.56

Finding the Fourth Proportional to 21,019.52, 29,005.12 and 11,586.56

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Solution

The fourth proportional to 21,019.52, 29,005.12 and 11,586.56 is: 15,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.52 : 29,005.12 = 11,586.56 : x
  2. Step 2: Convert to fraction form
    21,019.52/29,005.12 = 11,586.56/x
  3. Step 3: Cross multiply
    21,019.52x = 29,005.12 × 11,586.56
  4. Step 4: Simplify right side
    21,019.52x = 336,069,563.19
  5. Step 5: Solve for x
    x = 336,069,563.19/21,019.52
  6. Step 6: Final answer
    x = 15,988.45

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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.