Home / 15,709.02-21,665.40-10,404.30

Finding the Fourth Proportional to 15,709.02, 21,665.40 and 10,404.30

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Solution

The fourth proportional to 15,709.02, 21,665.40 and 10,404.30 is: 14,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.02 : 21,665.40 = 10,404.30 : x
  2. Step 2: Convert to fraction form
    15,709.02/21,665.40 = 10,404.30/x
  3. Step 3: Cross multiply
    15,709.02x = 21,665.40 × 10,404.30
  4. Step 4: Simplify right side
    15,709.02x = 225,413,321.22
  5. Step 5: Solve for x
    x = 225,413,321.22/15,709.02
  6. Step 6: Final answer
    x = 14,349.29

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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.