Home / 28,462.56-39,278.96-15,715.71

Finding the Fourth Proportional to 28,462.56, 39,278.96 and 15,715.71

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Solution

The fourth proportional to 28,462.56, 39,278.96 and 15,715.71 is: 21,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.56 : 39,278.96 = 15,715.71 : x
  2. Step 2: Convert to fraction form
    28,462.56/39,278.96 = 15,715.71/x
  3. Step 3: Cross multiply
    28,462.56x = 39,278.96 × 15,715.71
  4. Step 4: Simplify right side
    28,462.56x = 617,296,744.46
  5. Step 5: Solve for x
    x = 617,296,744.46/28,462.56
  6. Step 6: Final answer
    x = 21,688.03

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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.