Home / 30,279.72-45,428.79-15,499.01

Finding the Fourth Proportional to 30,279.72, 45,428.79 and 15,499.01

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Solution

The fourth proportional to 30,279.72, 45,428.79 and 15,499.01 is: 23,253.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.72 : 45,428.79 = 15,499.01 : x
  2. Step 2: Convert to fraction form
    30,279.72/45,428.79 = 15,499.01/x
  3. Step 3: Cross multiply
    30,279.72x = 45,428.79 × 15,499.01
  4. Step 4: Simplify right side
    30,279.72x = 704,101,043.35
  5. Step 5: Solve for x
    x = 704,101,043.35/30,279.72
  6. Step 6: Final answer
    x = 23,253.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.