Home / 30,598.31-42,191.93-21,150.47

Finding the Fourth Proportional to 30,598.31, 42,191.93 and 21,150.47

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Solution

The fourth proportional to 30,598.31, 42,191.93 and 21,150.47 is: 29,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,598.31 : 42,191.93 = 21,150.47 : x
  2. Step 2: Convert to fraction form
    30,598.31/42,191.93 = 21,150.47/x
  3. Step 3: Cross multiply
    30,598.31x = 42,191.93 × 21,150.47
  4. Step 4: Simplify right side
    30,598.31x = 892,378,833.00
  5. Step 5: Solve for x
    x = 892,378,833.00/30,598.31
  6. Step 6: Final answer
    x = 29,164.32

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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.