Home / 20,962.34-28,924.86-11,887.20

Finding the Fourth Proportional to 20,962.34, 28,924.86 and 11,887.20

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Solution

The fourth proportional to 20,962.34, 28,924.86 and 11,887.20 is: 16,402.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.34 : 28,924.86 = 11,887.20 : x
  2. Step 2: Convert to fraction form
    20,962.34/28,924.86 = 11,887.20/x
  3. Step 3: Cross multiply
    20,962.34x = 28,924.86 × 11,887.20
  4. Step 4: Simplify right side
    20,962.34x = 343,835,595.79
  5. Step 5: Solve for x
    x = 343,835,595.79/20,962.34
  6. Step 6: Final answer
    x = 16,402.54

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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.