Home / 11,106.18-15,326.64-6,389.46

Finding the Fourth Proportional to 11,106.18, 15,326.64 and 6,389.46

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Solution

The fourth proportional to 11,106.18, 15,326.64 and 6,389.46 is: 8,817.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.18 : 15,326.64 = 6,389.46 : x
  2. Step 2: Convert to fraction form
    11,106.18/15,326.64 = 6,389.46/x
  3. Step 3: Cross multiply
    11,106.18x = 15,326.64 × 6,389.46
  4. Step 4: Simplify right side
    11,106.18x = 97,928,953.21
  5. Step 5: Solve for x
    x = 97,928,953.21/11,106.18
  6. Step 6: Final answer
    x = 8,817.52

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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.