Home / 28,145.40-38,835.90-17,538.36

Finding the Fourth Proportional to 28,145.40, 38,835.90 and 17,538.36

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Solution

The fourth proportional to 28,145.40, 38,835.90 and 17,538.36 is: 24,199.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.40 : 38,835.90 = 17,538.36 : x
  2. Step 2: Convert to fraction form
    28,145.40/38,835.90 = 17,538.36/x
  3. Step 3: Cross multiply
    28,145.40x = 38,835.90 × 17,538.36
  4. Step 4: Simplify right side
    28,145.40x = 681,117,995.12
  5. Step 5: Solve for x
    x = 681,117,995.12/28,145.40
  6. Step 6: Final answer
    x = 24,199.98

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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.