Home / 21,239.08-31,859.34-5,656.72

Finding the Fourth Proportional to 21,239.08, 31,859.34 and 5,656.72

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Solution

The fourth proportional to 21,239.08, 31,859.34 and 5,656.72 is: 8,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.08 : 31,859.34 = 5,656.72 : x
  2. Step 2: Convert to fraction form
    21,239.08/31,859.34 = 5,656.72/x
  3. Step 3: Cross multiply
    21,239.08x = 31,859.34 × 5,656.72
  4. Step 4: Simplify right side
    21,239.08x = 180,219,365.76
  5. Step 5: Solve for x
    x = 180,219,365.76/21,239.08
  6. Step 6: Final answer
    x = 8,485.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.