Home / 15,820.08-21,835.04-13,164.88

Finding the Fourth Proportional to 15,820.08, 21,835.04 and 13,164.88

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Solution

The fourth proportional to 15,820.08, 21,835.04 and 13,164.88 is: 18,170.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.08 : 21,835.04 = 13,164.88 : x
  2. Step 2: Convert to fraction form
    15,820.08/21,835.04 = 13,164.88/x
  3. Step 3: Cross multiply
    15,820.08x = 21,835.04 × 13,164.88
  4. Step 4: Simplify right side
    15,820.08x = 287,455,681.40
  5. Step 5: Solve for x
    x = 287,455,681.40/15,820.08
  6. Step 6: Final answer
    x = 18,170.31

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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.