Home / 15,911.02-21,957.65-9,619.75

Finding the Fourth Proportional to 15,911.02, 21,957.65 and 9,619.75

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Solution

The fourth proportional to 15,911.02, 21,957.65 and 9,619.75 is: 13,275.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.02 : 21,957.65 = 9,619.75 : x
  2. Step 2: Convert to fraction form
    15,911.02/21,957.65 = 9,619.75/x
  3. Step 3: Cross multiply
    15,911.02x = 21,957.65 × 9,619.75
  4. Step 4: Simplify right side
    15,911.02x = 211,227,103.59
  5. Step 5: Solve for x
    x = 211,227,103.59/15,911.02
  6. Step 6: Final answer
    x = 13,275.52

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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.