Home / 15,715.13-21,682.01-10,412.87

Finding the Fourth Proportional to 15,715.13, 21,682.01 and 10,412.87

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Solution

The fourth proportional to 15,715.13, 21,682.01 and 10,412.87 is: 14,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.13 : 21,682.01 = 10,412.87 : x
  2. Step 2: Convert to fraction form
    15,715.13/21,682.01 = 10,412.87/x
  3. Step 3: Cross multiply
    15,715.13x = 21,682.01 × 10,412.87
  4. Step 4: Simplify right side
    15,715.13x = 225,771,869.09
  5. Step 5: Solve for x
    x = 225,771,869.09/15,715.13
  6. Step 6: Final answer
    x = 14,366.53

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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.