Home / 28,851.63-39,815.28-15,930.93

Finding the Fourth Proportional to 28,851.63, 39,815.28 and 15,930.93

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Solution

The fourth proportional to 28,851.63, 39,815.28 and 15,930.93 is: 21,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.63 : 39,815.28 = 15,930.93 : x
  2. Step 2: Convert to fraction form
    28,851.63/39,815.28 = 15,930.93/x
  3. Step 3: Cross multiply
    28,851.63x = 39,815.28 × 15,930.93
  4. Step 4: Simplify right side
    28,851.63x = 634,294,438.61
  5. Step 5: Solve for x
    x = 634,294,438.61/28,851.63
  6. Step 6: Final answer
    x = 21,984.70

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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.