Home / 20,595.52-28,421.86-11,164.08

Finding the Fourth Proportional to 20,595.52, 28,421.86 and 11,164.08

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Solution

The fourth proportional to 20,595.52, 28,421.86 and 11,164.08 is: 15,406.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.52 : 28,421.86 = 11,164.08 : x
  2. Step 2: Convert to fraction form
    20,595.52/28,421.86 = 11,164.08/x
  3. Step 3: Cross multiply
    20,595.52x = 28,421.86 × 11,164.08
  4. Step 4: Simplify right side
    20,595.52x = 317,303,938.46
  5. Step 5: Solve for x
    x = 317,303,938.46/20,595.52
  6. Step 6: Final answer
    x = 15,406.46

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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.