Home / 10,921.14-15,055.91-9,235.77

Finding the Fourth Proportional to 10,921.14, 15,055.91 and 9,235.77

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Solution

The fourth proportional to 10,921.14, 15,055.91 and 9,235.77 is: 12,732.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.14 : 15,055.91 = 9,235.77 : x
  2. Step 2: Convert to fraction form
    10,921.14/15,055.91 = 9,235.77/x
  3. Step 3: Cross multiply
    10,921.14x = 15,055.91 × 9,235.77
  4. Step 4: Simplify right side
    10,921.14x = 139,052,875.72
  5. Step 5: Solve for x
    x = 139,052,875.72/10,921.14
  6. Step 6: Final answer
    x = 12,732.45

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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.