Home / 30,272.08-45,320.64-19,191.28

Finding the Fourth Proportional to 30,272.08, 45,320.64 and 19,191.28

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Solution

The fourth proportional to 30,272.08, 45,320.64 and 19,191.28 is: 28,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,272.08 : 45,320.64 = 19,191.28 : x
  2. Step 2: Convert to fraction form
    30,272.08/45,320.64 = 19,191.28/x
  3. Step 3: Cross multiply
    30,272.08x = 45,320.64 × 19,191.28
  4. Step 4: Simplify right side
    30,272.08x = 869,761,092.02
  5. Step 5: Solve for x
    x = 869,761,092.02/30,272.08
  6. Step 6: Final answer
    x = 28,731.46

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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.