Home / 14,218.64-19,621.76-7,931.44

Finding the Fourth Proportional to 14,218.64, 19,621.76 and 7,931.44

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Solution

The fourth proportional to 14,218.64, 19,621.76 and 7,931.44 is: 10,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.64 : 19,621.76 = 7,931.44 : x
  2. Step 2: Convert to fraction form
    14,218.64/19,621.76 = 7,931.44/x
  3. Step 3: Cross multiply
    14,218.64x = 19,621.76 × 7,931.44
  4. Step 4: Simplify right side
    14,218.64x = 155,628,812.13
  5. Step 5: Solve for x
    x = 155,628,812.13/14,218.64
  6. Step 6: Final answer
    x = 10,945.41

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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.