Home / 27,905.50-38,509.86-15,330.52

Finding the Fourth Proportional to 27,905.50, 38,509.86 and 15,330.52

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Solution

The fourth proportional to 27,905.50, 38,509.86 and 15,330.52 is: 21,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.50 : 38,509.86 = 15,330.52 : x
  2. Step 2: Convert to fraction form
    27,905.50/38,509.86 = 15,330.52/x
  3. Step 3: Cross multiply
    27,905.50x = 38,509.86 × 15,330.52
  4. Step 4: Simplify right side
    27,905.50x = 590,376,178.93
  5. Step 5: Solve for x
    x = 590,376,178.93/27,905.50
  6. Step 6: Final answer
    x = 21,156.27

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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.