Home / 28,131.19-38,820.48-15,384.01

Finding the Fourth Proportional to 28,131.19, 38,820.48 and 15,384.01

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Solution

The fourth proportional to 28,131.19, 38,820.48 and 15,384.01 is: 21,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,131.19 : 38,820.48 = 15,384.01 : x
  2. Step 2: Convert to fraction form
    28,131.19/38,820.48 = 15,384.01/x
  3. Step 3: Cross multiply
    28,131.19x = 38,820.48 × 15,384.01
  4. Step 4: Simplify right side
    28,131.19x = 597,214,652.52
  5. Step 5: Solve for x
    x = 597,214,652.52/28,131.19
  6. Step 6: Final answer
    x = 21,229.63

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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.