Home / 28,246.76-38,980.58-15,671.51

Finding the Fourth Proportional to 28,246.76, 38,980.58 and 15,671.51

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Solution

The fourth proportional to 28,246.76, 38,980.58 and 15,671.51 is: 21,626.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.76 : 38,980.58 = 15,671.51 : x
  2. Step 2: Convert to fraction form
    28,246.76/38,980.58 = 15,671.51/x
  3. Step 3: Cross multiply
    28,246.76x = 38,980.58 × 15,671.51
  4. Step 4: Simplify right side
    28,246.76x = 610,884,549.28
  5. Step 5: Solve for x
    x = 610,884,549.28/28,246.76
  6. Step 6: Final answer
    x = 21,626.71

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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.