Home / 20,656.64-28,506.72-11,225.84

Finding the Fourth Proportional to 20,656.64, 28,506.72 and 11,225.84

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Solution

The fourth proportional to 20,656.64, 28,506.72 and 11,225.84 is: 15,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.64 : 28,506.72 = 11,225.84 : x
  2. Step 2: Convert to fraction form
    20,656.64/28,506.72 = 11,225.84/x
  3. Step 3: Cross multiply
    20,656.64x = 28,506.72 × 11,225.84
  4. Step 4: Simplify right side
    20,656.64x = 320,011,877.64
  5. Step 5: Solve for x
    x = 320,011,877.64/20,656.64
  6. Step 6: Final answer
    x = 15,491.96

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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.