Home / 15,011.84-20,716.80-8,298.56

Finding the Fourth Proportional to 15,011.84, 20,716.80 and 8,298.56

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Solution

The fourth proportional to 15,011.84, 20,716.80 and 8,298.56 is: 11,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.84 : 20,716.80 = 8,298.56 : x
  2. Step 2: Convert to fraction form
    15,011.84/20,716.80 = 8,298.56/x
  3. Step 3: Cross multiply
    15,011.84x = 20,716.80 × 8,298.56
  4. Step 4: Simplify right side
    15,011.84x = 171,919,607.81
  5. Step 5: Solve for x
    x = 171,919,607.81/15,011.84
  6. Step 6: Final answer
    x = 11,452.27

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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.