Home / 20,905.10-28,848.02-11,953.58

Finding the Fourth Proportional to 20,905.10, 28,848.02 and 11,953.58

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Solution

The fourth proportional to 20,905.10, 28,848.02 and 11,953.58 is: 16,495.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.10 : 28,848.02 = 11,953.58 : x
  2. Step 2: Convert to fraction form
    20,905.10/28,848.02 = 11,953.58/x
  3. Step 3: Cross multiply
    20,905.10x = 28,848.02 × 11,953.58
  4. Step 4: Simplify right side
    20,905.10x = 344,837,114.91
  5. Step 5: Solve for x
    x = 344,837,114.91/20,905.10
  6. Step 6: Final answer
    x = 16,495.36

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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.