Home / 27,638.77-38,140.37-15,700.79

Finding the Fourth Proportional to 27,638.77, 38,140.37 and 15,700.79

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Solution

The fourth proportional to 27,638.77, 38,140.37 and 15,700.79 is: 21,666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.77 : 38,140.37 = 15,700.79 : x
  2. Step 2: Convert to fraction form
    27,638.77/38,140.37 = 15,700.79/x
  3. Step 3: Cross multiply
    27,638.77x = 38,140.37 × 15,700.79
  4. Step 4: Simplify right side
    27,638.77x = 598,833,801.08
  5. Step 5: Solve for x
    x = 598,833,801.08/27,638.77
  6. Step 6: Final answer
    x = 21,666.44

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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.