Home / 20,500.08-28,289.70-11,547.42

Finding the Fourth Proportional to 20,500.08, 28,289.70 and 11,547.42

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Solution

The fourth proportional to 20,500.08, 28,289.70 and 11,547.42 is: 15,935.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.08 : 28,289.70 = 11,547.42 : x
  2. Step 2: Convert to fraction form
    20,500.08/28,289.70 = 11,547.42/x
  3. Step 3: Cross multiply
    20,500.08x = 28,289.70 × 11,547.42
  4. Step 4: Simplify right side
    20,500.08x = 326,673,047.57
  5. Step 5: Solve for x
    x = 326,673,047.57/20,500.08
  6. Step 6: Final answer
    x = 15,935.21

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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.