Home / 15,270.32-21,071.80-8,554.96

Finding the Fourth Proportional to 15,270.32, 21,071.80 and 8,554.96

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Solution

The fourth proportional to 15,270.32, 21,071.80 and 8,554.96 is: 11,805.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.32 : 21,071.80 = 8,554.96 : x
  2. Step 2: Convert to fraction form
    15,270.32/21,071.80 = 8,554.96/x
  3. Step 3: Cross multiply
    15,270.32x = 21,071.80 × 8,554.96
  4. Step 4: Simplify right side
    15,270.32x = 180,268,406.13
  5. Step 5: Solve for x
    x = 180,268,406.13/15,270.32
  6. Step 6: Final answer
    x = 11,805.15

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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.