Home / 27,815.16-38,378.70-15,874.68

Finding the Fourth Proportional to 27,815.16, 38,378.70 and 15,874.68

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Solution

The fourth proportional to 27,815.16, 38,378.70 and 15,874.68 is: 21,903.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.16 : 38,378.70 = 15,874.68 : x
  2. Step 2: Convert to fraction form
    27,815.16/38,378.70 = 15,874.68/x
  3. Step 3: Cross multiply
    27,815.16x = 38,378.70 × 15,874.68
  4. Step 4: Simplify right side
    27,815.16x = 609,249,581.32
  5. Step 5: Solve for x
    x = 609,249,581.32/27,815.16
  6. Step 6: Final answer
    x = 21,903.51

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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.