Home / 21,535.98-29,718.96-11,975.82

Finding the Fourth Proportional to 21,535.98, 29,718.96 and 11,975.82

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Solution

The fourth proportional to 21,535.98, 29,718.96 and 11,975.82 is: 16,526.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.98 : 29,718.96 = 11,975.82 : x
  2. Step 2: Convert to fraction form
    21,535.98/29,718.96 = 11,975.82/x
  3. Step 3: Cross multiply
    21,535.98x = 29,718.96 × 11,975.82
  4. Step 4: Simplify right side
    21,535.98x = 355,908,915.55
  5. Step 5: Solve for x
    x = 355,908,915.55/21,535.98
  6. Step 6: Final answer
    x = 16,526.25

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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.