Home / 28,690.70-39,590.65-15,943.08

Finding the Fourth Proportional to 28,690.70, 39,590.65 and 15,943.08

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Solution

The fourth proportional to 28,690.70, 39,590.65 and 15,943.08 is: 22,000.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.70 : 39,590.65 = 15,943.08 : x
  2. Step 2: Convert to fraction form
    28,690.70/39,590.65 = 15,943.08/x
  3. Step 3: Cross multiply
    28,690.70x = 39,590.65 × 15,943.08
  4. Step 4: Simplify right side
    28,690.70x = 631,196,622.53
  5. Step 5: Solve for x
    x = 631,196,622.53/28,690.70
  6. Step 6: Final answer
    x = 22,000.04

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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.