Home / 15,851.19-21,872.73-8,777.16

Finding the Fourth Proportional to 15,851.19, 21,872.73 and 8,777.16

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Solution

The fourth proportional to 15,851.19, 21,872.73 and 8,777.16 is: 12,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.19 : 21,872.73 = 8,777.16 : x
  2. Step 2: Convert to fraction form
    15,851.19/21,872.73 = 8,777.16/x
  3. Step 3: Cross multiply
    15,851.19x = 21,872.73 × 8,777.16
  4. Step 4: Simplify right side
    15,851.19x = 191,980,483.76
  5. Step 5: Solve for x
    x = 191,980,483.76/15,851.19
  6. Step 6: Final answer
    x = 12,111.42

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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.