Home / 10,285.20-14,189.16-7,923.60

Finding the Fourth Proportional to 10,285.20, 14,189.16 and 7,923.60

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Solution

The fourth proportional to 10,285.20, 14,189.16 and 7,923.60 is: 10,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285.20 : 14,189.16 = 7,923.60 : x
  2. Step 2: Convert to fraction form
    10,285.20/14,189.16 = 7,923.60/x
  3. Step 3: Cross multiply
    10,285.20x = 14,189.16 × 7,923.60
  4. Step 4: Simplify right side
    10,285.20x = 112,429,228.18
  5. Step 5: Solve for x
    x = 112,429,228.18/10,285.20
  6. Step 6: Final answer
    x = 10,931.17

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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.