Home / 28,009.60-38,649.75-18,954.76

Finding the Fourth Proportional to 28,009.60, 38,649.75 and 18,954.76

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Solution

The fourth proportional to 28,009.60, 38,649.75 and 18,954.76 is: 26,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.60 : 38,649.75 = 18,954.76 : x
  2. Step 2: Convert to fraction form
    28,009.60/38,649.75 = 18,954.76/x
  3. Step 3: Cross multiply
    28,009.60x = 38,649.75 × 18,954.76
  4. Step 4: Simplify right side
    28,009.60x = 732,596,735.31
  5. Step 5: Solve for x
    x = 732,596,735.31/28,009.60
  6. Step 6: Final answer
    x = 26,155.20

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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.