Home / 20,527.78-28,332.74-12,969.32

Finding the Fourth Proportional to 20,527.78, 28,332.74 and 12,969.32

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Solution

The fourth proportional to 20,527.78, 28,332.74 and 12,969.32 is: 17,900.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.78 : 28,332.74 = 12,969.32 : x
  2. Step 2: Convert to fraction form
    20,527.78/28,332.74 = 12,969.32/x
  3. Step 3: Cross multiply
    20,527.78x = 28,332.74 × 12,969.32
  4. Step 4: Simplify right side
    20,527.78x = 367,456,189.34
  5. Step 5: Solve for x
    x = 367,456,189.34/20,527.78
  6. Step 6: Final answer
    x = 17,900.44

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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.