Home / 30,158.52-45,259.64-21,215.05

Finding the Fourth Proportional to 30,158.52, 45,259.64 and 21,215.05

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Solution

The fourth proportional to 30,158.52, 45,259.64 and 21,215.05 is: 31,837.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,158.52 : 45,259.64 = 21,215.05 : x
  2. Step 2: Convert to fraction form
    30,158.52/45,259.64 = 21,215.05/x
  3. Step 3: Cross multiply
    30,158.52x = 45,259.64 × 21,215.05
  4. Step 4: Simplify right side
    30,158.52x = 960,185,525.58
  5. Step 5: Solve for x
    x = 960,185,525.58/30,158.52
  6. Step 6: Final answer
    x = 31,837.95

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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.