Home / 30,973.20-42,742.64-16,825.20

Finding the Fourth Proportional to 30,973.20, 42,742.64 and 16,825.20

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Solution

The fourth proportional to 30,973.20, 42,742.64 and 16,825.20 is: 23,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,973.20 : 42,742.64 = 16,825.20 : x
  2. Step 2: Convert to fraction form
    30,973.20/42,742.64 = 16,825.20/x
  3. Step 3: Cross multiply
    30,973.20x = 42,742.64 × 16,825.20
  4. Step 4: Simplify right side
    30,973.20x = 719,153,466.53
  5. Step 5: Solve for x
    x = 719,153,466.53/30,973.20
  6. Step 6: Final answer
    x = 23,218.57

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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.