Home / 11,139.16-15,371.46-6,102.45

Finding the Fourth Proportional to 11,139.16, 15,371.46 and 6,102.45

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Solution

The fourth proportional to 11,139.16, 15,371.46 and 6,102.45 is: 8,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.16 : 15,371.46 = 6,102.45 : x
  2. Step 2: Convert to fraction form
    11,139.16/15,371.46 = 6,102.45/x
  3. Step 3: Cross multiply
    11,139.16x = 15,371.46 × 6,102.45
  4. Step 4: Simplify right side
    11,139.16x = 93,803,566.08
  5. Step 5: Solve for x
    x = 93,803,566.08/11,139.16
  6. Step 6: Final answer
    x = 8,421.06

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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.