Home / 30,208.10-45,320.31-21,498.30

Finding the Fourth Proportional to 30,208.10, 45,320.31 and 21,498.30

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Solution

The fourth proportional to 30,208.10, 45,320.31 and 21,498.30 is: 32,253.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,208.10 : 45,320.31 = 21,498.30 : x
  2. Step 2: Convert to fraction form
    30,208.10/45,320.31 = 21,498.30/x
  3. Step 3: Cross multiply
    30,208.10x = 45,320.31 × 21,498.30
  4. Step 4: Simplify right side
    30,208.10x = 974,309,620.47
  5. Step 5: Solve for x
    x = 974,309,620.47/30,208.10
  6. Step 6: Final answer
    x = 32,253.26

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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.