Home / 10,289.73-15,431.40-3,715.08

Finding the Fourth Proportional to 10,289.73, 15,431.40 and 3,715.08

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Solution

The fourth proportional to 10,289.73, 15,431.40 and 3,715.08 is: 5,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,289.73 : 15,431.40 = 3,715.08 : x
  2. Step 2: Convert to fraction form
    10,289.73/15,431.40 = 3,715.08/x
  3. Step 3: Cross multiply
    10,289.73x = 15,431.40 × 3,715.08
  4. Step 4: Simplify right side
    10,289.73x = 57,328,885.51
  5. Step 5: Solve for x
    x = 57,328,885.51/10,289.73
  6. Step 6: Final answer
    x = 5,571.47

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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.