Home / 20,866.32-31,113.33-18,548.10

Finding the Fourth Proportional to 20,866.32, 31,113.33 and 18,548.10

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Solution

The fourth proportional to 20,866.32, 31,113.33 and 18,548.10 is: 27,656.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.32 : 31,113.33 = 18,548.10 : x
  2. Step 2: Convert to fraction form
    20,866.32/31,113.33 = 18,548.10/x
  3. Step 3: Cross multiply
    20,866.32x = 31,113.33 × 18,548.10
  4. Step 4: Simplify right side
    20,866.32x = 577,093,156.17
  5. Step 5: Solve for x
    x = 577,093,156.17/20,866.32
  6. Step 6: Final answer
    x = 27,656.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.