Home / 28,178.13-38,887.03-15,602.88

Finding the Fourth Proportional to 28,178.13, 38,887.03 and 15,602.88

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Solution

The fourth proportional to 28,178.13, 38,887.03 and 15,602.88 is: 21,532.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.13 : 38,887.03 = 15,602.88 : x
  2. Step 2: Convert to fraction form
    28,178.13/38,887.03 = 15,602.88/x
  3. Step 3: Cross multiply
    28,178.13x = 38,887.03 × 15,602.88
  4. Step 4: Simplify right side
    28,178.13x = 606,749,429.20
  5. Step 5: Solve for x
    x = 606,749,429.20/28,178.13
  6. Step 6: Final answer
    x = 21,532.64

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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.