Home / 11,385.02-15,703.62-9,890.34

Finding the Fourth Proportional to 11,385.02, 15,703.62 and 9,890.34

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Solution

The fourth proportional to 11,385.02, 15,703.62 and 9,890.34 is: 13,641.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.02 : 15,703.62 = 9,890.34 : x
  2. Step 2: Convert to fraction form
    11,385.02/15,703.62 = 9,890.34/x
  3. Step 3: Cross multiply
    11,385.02x = 15,703.62 × 9,890.34
  4. Step 4: Simplify right side
    11,385.02x = 155,314,141.03
  5. Step 5: Solve for x
    x = 155,314,141.03/11,385.02
  6. Step 6: Final answer
    x = 13,641.97

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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.