Home / 15,851.28-21,868.48-10,185.16

Finding the Fourth Proportional to 15,851.28, 21,868.48 and 10,185.16

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Solution

The fourth proportional to 15,851.28, 21,868.48 and 10,185.16 is: 14,051.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.28 : 21,868.48 = 10,185.16 : x
  2. Step 2: Convert to fraction form
    15,851.28/21,868.48 = 10,185.16/x
  3. Step 3: Cross multiply
    15,851.28x = 21,868.48 × 10,185.16
  4. Step 4: Simplify right side
    15,851.28x = 222,733,967.76
  5. Step 5: Solve for x
    x = 222,733,967.76/15,851.28
  6. Step 6: Final answer
    x = 14,051.48

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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.