Home / 11,030.42-15,215.91-6,989.84

Finding the Fourth Proportional to 11,030.42, 15,215.91 and 6,989.84

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Solution

The fourth proportional to 11,030.42, 15,215.91 and 6,989.84 is: 9,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,030.42 : 15,215.91 = 6,989.84 : x
  2. Step 2: Convert to fraction form
    11,030.42/15,215.91 = 6,989.84/x
  3. Step 3: Cross multiply
    11,030.42x = 15,215.91 × 6,989.84
  4. Step 4: Simplify right side
    11,030.42x = 106,356,776.35
  5. Step 5: Solve for x
    x = 106,356,776.35/11,030.42
  6. Step 6: Final answer
    x = 9,642.13

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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.