Home / 28,076.76-38,746.01-15,330.06

Finding the Fourth Proportional to 28,076.76, 38,746.01 and 15,330.06

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Solution

The fourth proportional to 28,076.76, 38,746.01 and 15,330.06 is: 21,155.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.76 : 38,746.01 = 15,330.06 : x
  2. Step 2: Convert to fraction form
    28,076.76/38,746.01 = 15,330.06/x
  3. Step 3: Cross multiply
    28,076.76x = 38,746.01 × 15,330.06
  4. Step 4: Simplify right side
    28,076.76x = 593,978,579.83
  5. Step 5: Solve for x
    x = 593,978,579.83/28,076.76
  6. Step 6: Final answer
    x = 21,155.52

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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.