Home / 15,643.60-21,588.48-8,570.03

Finding the Fourth Proportional to 15,643.60, 21,588.48 and 8,570.03

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Solution

The fourth proportional to 15,643.60, 21,588.48 and 8,570.03 is: 11,826.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.60 : 21,588.48 = 8,570.03 : x
  2. Step 2: Convert to fraction form
    15,643.60/21,588.48 = 8,570.03/x
  3. Step 3: Cross multiply
    15,643.60x = 21,588.48 × 8,570.03
  4. Step 4: Simplify right side
    15,643.60x = 185,013,921.25
  5. Step 5: Solve for x
    x = 185,013,921.25/15,643.60
  6. Step 6: Final answer
    x = 11,826.81

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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.