Home / 28,931.57-43,367.59-13,147.58

Finding the Fourth Proportional to 28,931.57, 43,367.59 and 13,147.58

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Solution

The fourth proportional to 28,931.57, 43,367.59 and 13,147.58 is: 19,707.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.57 : 43,367.59 = 13,147.58 : x
  2. Step 2: Convert to fraction form
    28,931.57/43,367.59 = 13,147.58/x
  3. Step 3: Cross multiply
    28,931.57x = 43,367.59 × 13,147.58
  4. Step 4: Simplify right side
    28,931.57x = 570,178,934.48
  5. Step 5: Solve for x
    x = 570,178,934.48/28,931.57
  6. Step 6: Final answer
    x = 19,707.84

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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.