Home / 28,930.72-39,924.40-16,355.36

Finding the Fourth Proportional to 28,930.72, 39,924.40 and 16,355.36

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Solution

The fourth proportional to 28,930.72, 39,924.40 and 16,355.36 is: 22,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,930.72 : 39,924.40 = 16,355.36 : x
  2. Step 2: Convert to fraction form
    28,930.72/39,924.40 = 16,355.36/x
  3. Step 3: Cross multiply
    28,930.72x = 39,924.40 × 16,355.36
  4. Step 4: Simplify right side
    28,930.72x = 652,977,934.78
  5. Step 5: Solve for x
    x = 652,977,934.78/28,930.72
  6. Step 6: Final answer
    x = 22,570.40

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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.