Home / 15,784.02-21,785.58-9,820.26

Finding the Fourth Proportional to 15,784.02, 21,785.58 and 9,820.26

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Solution

The fourth proportional to 15,784.02, 21,785.58 and 9,820.26 is: 13,554.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,784.02 : 21,785.58 = 9,820.26 : x
  2. Step 2: Convert to fraction form
    15,784.02/21,785.58 = 9,820.26/x
  3. Step 3: Cross multiply
    15,784.02x = 21,785.58 × 9,820.26
  4. Step 4: Simplify right side
    15,784.02x = 213,940,059.85
  5. Step 5: Solve for x
    x = 213,940,059.85/15,784.02
  6. Step 6: Final answer
    x = 13,554.22

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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.