Home / 23,070.80-31,820.28-19,889.60

Finding the Fourth Proportional to 23,070.80, 31,820.28 and 19,889.60

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Solution

The fourth proportional to 23,070.80, 31,820.28 and 19,889.60 is: 27,432.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,070.80 : 31,820.28 = 19,889.60 : x
  2. Step 2: Convert to fraction form
    23,070.80/31,820.28 = 19,889.60/x
  3. Step 3: Cross multiply
    23,070.80x = 31,820.28 × 19,889.60
  4. Step 4: Simplify right side
    23,070.80x = 632,892,641.09
  5. Step 5: Solve for x
    x = 632,892,641.09/23,070.80
  6. Step 6: Final answer
    x = 27,432.63

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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.