Home / 15,619.30-21,548.56-9,953.02

Finding the Fourth Proportional to 15,619.30, 21,548.56 and 9,953.02

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Solution

The fourth proportional to 15,619.30, 21,548.56 and 9,953.02 is: 13,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.30 : 21,548.56 = 9,953.02 : x
  2. Step 2: Convert to fraction form
    15,619.30/21,548.56 = 9,953.02/x
  3. Step 3: Cross multiply
    15,619.30x = 21,548.56 × 9,953.02
  4. Step 4: Simplify right side
    15,619.30x = 214,473,248.65
  5. Step 5: Solve for x
    x = 214,473,248.65/15,619.30
  6. Step 6: Final answer
    x = 13,731.30

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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.