Home / 30,969.72-46,420.56-20,283.12

Finding the Fourth Proportional to 30,969.72, 46,420.56 and 20,283.12

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Solution

The fourth proportional to 30,969.72, 46,420.56 and 20,283.12 is: 30,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.72 : 46,420.56 = 20,283.12 : x
  2. Step 2: Convert to fraction form
    30,969.72/46,420.56 = 20,283.12/x
  3. Step 3: Cross multiply
    30,969.72x = 46,420.56 × 20,283.12
  4. Step 4: Simplify right side
    30,969.72x = 941,553,788.95
  5. Step 5: Solve for x
    x = 941,553,788.95/30,969.72
  6. Step 6: Final answer
    x = 30,402.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.