Home / 27,731.01-38,275.60-15,801.39

Finding the Fourth Proportional to 27,731.01, 38,275.60 and 15,801.39

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Solution

The fourth proportional to 27,731.01, 38,275.60 and 15,801.39 is: 21,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.01 : 38,275.60 = 15,801.39 : x
  2. Step 2: Convert to fraction form
    27,731.01/38,275.60 = 15,801.39/x
  3. Step 3: Cross multiply
    27,731.01x = 38,275.60 × 15,801.39
  4. Step 4: Simplify right side
    27,731.01x = 604,807,683.08
  5. Step 5: Solve for x
    x = 604,807,683.08/27,731.01
  6. Step 6: Final answer
    x = 21,809.80

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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.