Home / 20,807.50-28,714.36-11,376.14

Finding the Fourth Proportional to 20,807.50, 28,714.36 and 11,376.14

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Solution

The fourth proportional to 20,807.50, 28,714.36 and 11,376.14 is: 15,699.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.50 : 28,714.36 = 11,376.14 : x
  2. Step 2: Convert to fraction form
    20,807.50/28,714.36 = 11,376.14/x
  3. Step 3: Cross multiply
    20,807.50x = 28,714.36 × 11,376.14
  4. Step 4: Simplify right side
    20,807.50x = 326,658,579.37
  5. Step 5: Solve for x
    x = 326,658,579.37/20,807.50
  6. Step 6: Final answer
    x = 15,699.08

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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.