Home / 28,684.83-39,582.72-15,938.40

Finding the Fourth Proportional to 28,684.83, 39,582.72 and 15,938.40

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Solution

The fourth proportional to 28,684.83, 39,582.72 and 15,938.40 is: 21,993.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.83 : 39,582.72 = 15,938.40 : x
  2. Step 2: Convert to fraction form
    28,684.83/39,582.72 = 15,938.40/x
  3. Step 3: Cross multiply
    28,684.83x = 39,582.72 × 15,938.40
  4. Step 4: Simplify right side
    28,684.83x = 630,885,224.45
  5. Step 5: Solve for x
    x = 630,885,224.45/28,684.83
  6. Step 6: Final answer
    x = 21,993.69

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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.