Home / 30,972.36-42,741.88-16,825.50

Finding the Fourth Proportional to 30,972.36, 42,741.88 and 16,825.50

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Solution

The fourth proportional to 30,972.36, 42,741.88 and 16,825.50 is: 23,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.36 : 42,741.88 = 16,825.50 : x
  2. Step 2: Convert to fraction form
    30,972.36/42,741.88 = 16,825.50/x
  3. Step 3: Cross multiply
    30,972.36x = 42,741.88 × 16,825.50
  4. Step 4: Simplify right side
    30,972.36x = 719,153,501.94
  5. Step 5: Solve for x
    x = 719,153,501.94/30,972.36
  6. Step 6: Final answer
    x = 23,219.20

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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.