Home / 10,635.84-15,970.08-5,715.12

Finding the Fourth Proportional to 10,635.84, 15,970.08 and 5,715.12

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Solution

The fourth proportional to 10,635.84, 15,970.08 and 5,715.12 is: 8,581.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,635.84 : 15,970.08 = 5,715.12 : x
  2. Step 2: Convert to fraction form
    10,635.84/15,970.08 = 5,715.12/x
  3. Step 3: Cross multiply
    10,635.84x = 15,970.08 × 5,715.12
  4. Step 4: Simplify right side
    10,635.84x = 91,270,923.61
  5. Step 5: Solve for x
    x = 91,270,923.61/10,635.84
  6. Step 6: Final answer
    x = 8,581.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.