Home / 10,485.27-15,640.40-8,934.93

Finding the Fourth Proportional to 10,485.27, 15,640.40 and 8,934.93

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Solution

The fourth proportional to 10,485.27, 15,640.40 and 8,934.93 is: 13,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,485.27 : 15,640.40 = 8,934.93 : x
  2. Step 2: Convert to fraction form
    10,485.27/15,640.40 = 8,934.93/x
  3. Step 3: Cross multiply
    10,485.27x = 15,640.40 × 8,934.93
  4. Step 4: Simplify right side
    10,485.27x = 139,745,901.51
  5. Step 5: Solve for x
    x = 139,745,901.51/10,485.27
  6. Step 6: Final answer
    x = 13,327.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.