Home / 20,730.51-28,608.52-11,299.07

Finding the Fourth Proportional to 20,730.51, 28,608.52 and 11,299.07

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Solution

The fourth proportional to 20,730.51, 28,608.52 and 11,299.07 is: 15,592.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.51 : 28,608.52 = 11,299.07 : x
  2. Step 2: Convert to fraction form
    20,730.51/28,608.52 = 11,299.07/x
  3. Step 3: Cross multiply
    20,730.51x = 28,608.52 × 11,299.07
  4. Step 4: Simplify right side
    20,730.51x = 323,249,670.08
  5. Step 5: Solve for x
    x = 323,249,670.08/20,730.51
  6. Step 6: Final answer
    x = 15,592.94

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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.