Home / 30,829.10-42,533.75-20,069.06

Finding the Fourth Proportional to 30,829.10, 42,533.75 and 20,069.06

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Solution

The fourth proportional to 30,829.10, 42,533.75 and 20,069.06 is: 27,688.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,829.10 : 42,533.75 = 20,069.06 : x
  2. Step 2: Convert to fraction form
    30,829.10/42,533.75 = 20,069.06/x
  3. Step 3: Cross multiply
    30,829.10x = 42,533.75 × 20,069.06
  4. Step 4: Simplify right side
    30,829.10x = 853,612,067.76
  5. Step 5: Solve for x
    x = 853,612,067.76/30,829.10
  6. Step 6: Final answer
    x = 27,688.52

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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.