Home / 27,785.68-38,347.32-15,851.96

Finding the Fourth Proportional to 27,785.68, 38,347.32 and 15,851.96

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Solution

The fourth proportional to 27,785.68, 38,347.32 and 15,851.96 is: 21,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.68 : 38,347.32 = 15,851.96 : x
  2. Step 2: Convert to fraction form
    27,785.68/38,347.32 = 15,851.96/x
  3. Step 3: Cross multiply
    27,785.68x = 38,347.32 × 15,851.96
  4. Step 4: Simplify right side
    27,785.68x = 607,880,182.75
  5. Step 5: Solve for x
    x = 607,880,182.75/27,785.68
  6. Step 6: Final answer
    x = 21,877.46

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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.