Home / 20,637.48-28,479.78-11,206.08

Finding the Fourth Proportional to 20,637.48, 28,479.78 and 11,206.08

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Solution

The fourth proportional to 20,637.48, 28,479.78 and 11,206.08 is: 15,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.48 : 28,479.78 = 11,206.08 : x
  2. Step 2: Convert to fraction form
    20,637.48/28,479.78 = 11,206.08/x
  3. Step 3: Cross multiply
    20,637.48x = 28,479.78 × 11,206.08
  4. Step 4: Simplify right side
    20,637.48x = 319,146,693.06
  5. Step 5: Solve for x
    x = 319,146,693.06/20,637.48
  6. Step 6: Final answer
    x = 15,464.42

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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.