Home / 20,484.39-28,271.15-11,533.64

Finding the Fourth Proportional to 20,484.39, 28,271.15 and 11,533.64

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Solution

The fourth proportional to 20,484.39, 28,271.15 and 11,533.64 is: 15,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.39 : 28,271.15 = 11,533.64 : x
  2. Step 2: Convert to fraction form
    20,484.39/28,271.15 = 11,533.64/x
  3. Step 3: Cross multiply
    20,484.39x = 28,271.15 × 11,533.64
  4. Step 4: Simplify right side
    20,484.39x = 326,069,125.13
  5. Step 5: Solve for x
    x = 326,069,125.13/20,484.39
  6. Step 6: Final answer
    x = 15,917.94

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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.