Home / 15,659.47-21,597.52-13,767.03

Finding the Fourth Proportional to 15,659.47, 21,597.52 and 13,767.03

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Solution

The fourth proportional to 15,659.47, 21,597.52 and 13,767.03 is: 18,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.47 : 21,597.52 = 13,767.03 : x
  2. Step 2: Convert to fraction form
    15,659.47/21,597.52 = 13,767.03/x
  3. Step 3: Cross multiply
    15,659.47x = 21,597.52 × 13,767.03
  4. Step 4: Simplify right side
    15,659.47x = 297,333,705.77
  5. Step 5: Solve for x
    x = 297,333,705.77/15,659.47
  6. Step 6: Final answer
    x = 18,987.47

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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.