Home / 11,121.02-15,347.10-6,871.10

Finding the Fourth Proportional to 11,121.02, 15,347.10 and 6,871.10

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Solution

The fourth proportional to 11,121.02, 15,347.10 and 6,871.10 is: 9,482.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.02 : 15,347.10 = 6,871.10 : x
  2. Step 2: Convert to fraction form
    11,121.02/15,347.10 = 6,871.10/x
  3. Step 3: Cross multiply
    11,121.02x = 15,347.10 × 6,871.10
  4. Step 4: Simplify right side
    11,121.02x = 105,451,458.81
  5. Step 5: Solve for x
    x = 105,451,458.81/11,121.02
  6. Step 6: Final answer
    x = 9,482.18

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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.