Home / 15,725.88-21,699.28-9,352.35

Finding the Fourth Proportional to 15,725.88, 21,699.28 and 9,352.35

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Solution

The fourth proportional to 15,725.88, 21,699.28 and 9,352.35 is: 12,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.88 : 21,699.28 = 9,352.35 : x
  2. Step 2: Convert to fraction form
    15,725.88/21,699.28 = 9,352.35/x
  3. Step 3: Cross multiply
    15,725.88x = 21,699.28 × 9,352.35
  4. Step 4: Simplify right side
    15,725.88x = 202,939,261.31
  5. Step 5: Solve for x
    x = 202,939,261.31/15,725.88
  6. Step 6: Final answer
    x = 12,904.80

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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.