Home / 28,460.39-39,276.65-15,715.37

Finding the Fourth Proportional to 28,460.39, 39,276.65 and 15,715.37

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Solution

The fourth proportional to 28,460.39, 39,276.65 and 15,715.37 is: 21,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.39 : 39,276.65 = 15,715.37 : x
  2. Step 2: Convert to fraction form
    28,460.39/39,276.65 = 15,715.37/x
  3. Step 3: Cross multiply
    28,460.39x = 39,276.65 × 15,715.37
  4. Step 4: Simplify right side
    28,460.39x = 617,246,812.15
  5. Step 5: Solve for x
    x = 617,246,812.15/28,460.39
  6. Step 6: Final answer
    x = 21,687.93

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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.