Home / 14,217.84-19,621.14-7,931.42

Finding the Fourth Proportional to 14,217.84, 19,621.14 and 7,931.42

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Solution

The fourth proportional to 14,217.84, 19,621.14 and 7,931.42 is: 10,945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,217.84 : 19,621.14 = 7,931.42 : x
  2. Step 2: Convert to fraction form
    14,217.84/19,621.14 = 7,931.42/x
  3. Step 3: Cross multiply
    14,217.84x = 19,621.14 × 7,931.42
  4. Step 4: Simplify right side
    14,217.84x = 155,623,502.22
  5. Step 5: Solve for x
    x = 155,623,502.22/14,217.84
  6. Step 6: Final answer
    x = 10,945.65

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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.