Home / 15,987.56-22,063.44-8,915.36

Finding the Fourth Proportional to 15,987.56, 22,063.44 and 8,915.36

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Solution

The fourth proportional to 15,987.56, 22,063.44 and 8,915.36 is: 12,303.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.56 : 22,063.44 = 8,915.36 : x
  2. Step 2: Convert to fraction form
    15,987.56/22,063.44 = 8,915.36/x
  3. Step 3: Cross multiply
    15,987.56x = 22,063.44 × 8,915.36
  4. Step 4: Simplify right side
    15,987.56x = 196,703,400.12
  5. Step 5: Solve for x
    x = 196,703,400.12/15,987.56
  6. Step 6: Final answer
    x = 12,303.53

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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.