Home / 28,677.59-39,576.20-15,931.74

Finding the Fourth Proportional to 28,677.59, 39,576.20 and 15,931.74

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Solution

The fourth proportional to 28,677.59, 39,576.20 and 15,931.74 is: 21,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.59 : 39,576.20 = 15,931.74 : x
  2. Step 2: Convert to fraction form
    28,677.59/39,576.20 = 15,931.74/x
  3. Step 3: Cross multiply
    28,677.59x = 39,576.20 × 15,931.74
  4. Step 4: Simplify right side
    28,677.59x = 630,517,574.72
  5. Step 5: Solve for x
    x = 630,517,574.72/28,677.59
  6. Step 6: Final answer
    x = 21,986.42

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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.