Home / 27,688.07-38,209.32-15,751.40

Finding the Fourth Proportional to 27,688.07, 38,209.32 and 15,751.40

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Solution

The fourth proportional to 27,688.07, 38,209.32 and 15,751.40 is: 21,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.07 : 38,209.32 = 15,751.40 : x
  2. Step 2: Convert to fraction form
    27,688.07/38,209.32 = 15,751.40/x
  3. Step 3: Cross multiply
    27,688.07x = 38,209.32 × 15,751.40
  4. Step 4: Simplify right side
    27,688.07x = 601,850,283.05
  5. Step 5: Solve for x
    x = 601,850,283.05/27,688.07
  6. Step 6: Final answer
    x = 21,736.81

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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.