Home / 11,455.18-15,807.40-6,738.55

Finding the Fourth Proportional to 11,455.18, 15,807.40 and 6,738.55

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Solution

The fourth proportional to 11,455.18, 15,807.40 and 6,738.55 is: 9,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.18 : 15,807.40 = 6,738.55 : x
  2. Step 2: Convert to fraction form
    11,455.18/15,807.40 = 6,738.55/x
  3. Step 3: Cross multiply
    11,455.18x = 15,807.40 × 6,738.55
  4. Step 4: Simplify right side
    11,455.18x = 106,518,955.27
  5. Step 5: Solve for x
    x = 106,518,955.27/11,455.18
  6. Step 6: Final answer
    x = 9,298.76

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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.