Home / 10,119.02-15,178.49-7,783.17

Finding the Fourth Proportional to 10,119.02, 15,178.49 and 7,783.17

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Solution

The fourth proportional to 10,119.02, 15,178.49 and 7,783.17 is: 11,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.02 : 15,178.49 = 7,783.17 : x
  2. Step 2: Convert to fraction form
    10,119.02/15,178.49 = 7,783.17/x
  3. Step 3: Cross multiply
    10,119.02x = 15,178.49 × 7,783.17
  4. Step 4: Simplify right side
    10,119.02x = 118,136,729.10
  5. Step 5: Solve for x
    x = 118,136,729.10/10,119.02
  6. Step 6: Final answer
    x = 11,674.73

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Half scale
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Double scale
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Similar ratio
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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.