Home / 30,972.51-42,742.22-16,825.32

Finding the Fourth Proportional to 30,972.51, 42,742.22 and 16,825.32

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Solution

The fourth proportional to 30,972.51, 42,742.22 and 16,825.32 is: 23,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.51 : 42,742.22 = 16,825.32 : x
  2. Step 2: Convert to fraction form
    30,972.51/42,742.22 = 16,825.32/x
  3. Step 3: Cross multiply
    30,972.51x = 42,742.22 × 16,825.32
  4. Step 4: Simplify right side
    30,972.51x = 719,151,444.88
  5. Step 5: Solve for x
    x = 719,151,444.88/30,972.51
  6. Step 6: Final answer
    x = 23,219.02

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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.