Home / 30,667.36-42,396.43-30,386.70

Finding the Fourth Proportional to 30,667.36, 42,396.43 and 30,386.70

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Solution

The fourth proportional to 30,667.36, 42,396.43 and 30,386.70 is: 42,008.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,667.36 : 42,396.43 = 30,386.70 : x
  2. Step 2: Convert to fraction form
    30,667.36/42,396.43 = 30,386.70/x
  3. Step 3: Cross multiply
    30,667.36x = 42,396.43 × 30,386.70
  4. Step 4: Simplify right side
    30,667.36x = 1,288,287,387.50
  5. Step 5: Solve for x
    x = 1,288,287,387.50/30,667.36
  6. Step 6: Final answer
    x = 42,008.42

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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.