Home / 28,506.94-39,340.79-15,931.69

Finding the Fourth Proportional to 28,506.94, 39,340.79 and 15,931.69

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Solution

The fourth proportional to 28,506.94, 39,340.79 and 15,931.69 is: 21,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.94 : 39,340.79 = 15,931.69 : x
  2. Step 2: Convert to fraction form
    28,506.94/39,340.79 = 15,931.69/x
  3. Step 3: Cross multiply
    28,506.94x = 39,340.79 × 15,931.69
  4. Step 4: Simplify right side
    28,506.94x = 626,765,152.37
  5. Step 5: Solve for x
    x = 626,765,152.37/28,506.94
  6. Step 6: Final answer
    x = 21,986.41

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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.