Home / 20,437.08-28,203.73-11,485.40

Finding the Fourth Proportional to 20,437.08, 28,203.73 and 11,485.40

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Solution

The fourth proportional to 20,437.08, 28,203.73 and 11,485.40 is: 15,850.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.08 : 28,203.73 = 11,485.40 : x
  2. Step 2: Convert to fraction form
    20,437.08/28,203.73 = 11,485.40/x
  3. Step 3: Cross multiply
    20,437.08x = 28,203.73 × 11,485.40
  4. Step 4: Simplify right side
    20,437.08x = 323,930,950.81
  5. Step 5: Solve for x
    x = 323,930,950.81/20,437.08
  6. Step 6: Final answer
    x = 15,850.16

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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.