Home / 11,156.63-15,396.02-6,440.81

Finding the Fourth Proportional to 11,156.63, 15,396.02 and 6,440.81

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Solution

The fourth proportional to 11,156.63, 15,396.02 and 6,440.81 is: 8,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.63 : 15,396.02 = 6,440.81 : x
  2. Step 2: Convert to fraction form
    11,156.63/15,396.02 = 6,440.81/x
  3. Step 3: Cross multiply
    11,156.63x = 15,396.02 × 6,440.81
  4. Step 4: Simplify right side
    11,156.63x = 99,162,839.58
  5. Step 5: Solve for x
    x = 99,162,839.58/11,156.63
  6. Step 6: Final answer
    x = 8,888.24

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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.