Home / 28,094.08-38,769.28-15,518.72

Finding the Fourth Proportional to 28,094.08, 38,769.28 and 15,518.72

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Solution

The fourth proportional to 28,094.08, 38,769.28 and 15,518.72 is: 21,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,094.08 : 38,769.28 = 15,518.72 : x
  2. Step 2: Convert to fraction form
    28,094.08/38,769.28 = 15,518.72/x
  3. Step 3: Cross multiply
    28,094.08x = 38,769.28 × 15,518.72
  4. Step 4: Simplify right side
    28,094.08x = 601,649,600.92
  5. Step 5: Solve for x
    x = 601,649,600.92/28,094.08
  6. Step 6: Final answer
    x = 21,415.53

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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.