Home / 10,355.16-15,538.23-7,905.72

Finding the Fourth Proportional to 10,355.16, 15,538.23 and 7,905.72

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Solution

The fourth proportional to 10,355.16, 15,538.23 and 7,905.72 is: 11,862.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.16 : 15,538.23 = 7,905.72 : x
  2. Step 2: Convert to fraction form
    10,355.16/15,538.23 = 7,905.72/x
  3. Step 3: Cross multiply
    10,355.16x = 15,538.23 × 7,905.72
  4. Step 4: Simplify right side
    10,355.16x = 122,840,895.68
  5. Step 5: Solve for x
    x = 122,840,895.68/10,355.16
  6. Step 6: Final answer
    x = 11,862.77

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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.