Home / 31,969.89-47,955.75-9,782.78

Finding the Fourth Proportional to 31,969.89, 47,955.75 and 9,782.78

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Solution

The fourth proportional to 31,969.89, 47,955.75 and 9,782.78 is: 14,674.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,969.89 : 47,955.75 = 9,782.78 : x
  2. Step 2: Convert to fraction form
    31,969.89/47,955.75 = 9,782.78/x
  3. Step 3: Cross multiply
    31,969.89x = 47,955.75 × 9,782.78
  4. Step 4: Simplify right side
    31,969.89x = 469,140,275.52
  5. Step 5: Solve for x
    x = 469,140,275.52/31,969.89
  6. Step 6: Final answer
    x = 14,674.44

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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.