Home / 30,973.44-42,741.12-18,405.12

Finding the Fourth Proportional to 30,973.44, 42,741.12 and 18,405.12

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Solution

The fourth proportional to 30,973.44, 42,741.12 and 18,405.12 is: 25,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,973.44 : 42,741.12 = 18,405.12 : x
  2. Step 2: Convert to fraction form
    30,973.44/42,741.12 = 18,405.12/x
  3. Step 3: Cross multiply
    30,973.44x = 42,741.12 × 18,405.12
  4. Step 4: Simplify right side
    30,973.44x = 786,655,442.53
  5. Step 5: Solve for x
    x = 786,655,442.53/30,973.44
  6. Step 6: Final answer
    x = 25,397.74

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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.