Home / 30,972.14-42,741.56-16,825.08

Finding the Fourth Proportional to 30,972.14, 42,741.56 and 16,825.08

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Solution

The fourth proportional to 30,972.14, 42,741.56 and 16,825.08 is: 23,218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.14 : 42,741.56 = 16,825.08 : x
  2. Step 2: Convert to fraction form
    30,972.14/42,741.56 = 16,825.08/x
  3. Step 3: Cross multiply
    30,972.14x = 42,741.56 × 16,825.08
  4. Step 4: Simplify right side
    30,972.14x = 719,130,166.32
  5. Step 5: Solve for x
    x = 719,130,166.32/30,972.14
  6. Step 6: Final answer
    x = 23,218.61

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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.