Home / 15,549.40-21,458.64-8,476.28

Finding the Fourth Proportional to 15,549.40, 21,458.64 and 8,476.28

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Solution

The fourth proportional to 15,549.40, 21,458.64 and 8,476.28 is: 11,697.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.40 : 21,458.64 = 8,476.28 : x
  2. Step 2: Convert to fraction form
    15,549.40/21,458.64 = 8,476.28/x
  3. Step 3: Cross multiply
    15,549.40x = 21,458.64 × 8,476.28
  4. Step 4: Simplify right side
    15,549.40x = 181,889,441.06
  5. Step 5: Solve for x
    x = 181,889,441.06/15,549.40
  6. Step 6: Final answer
    x = 11,697.52

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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.