Home / 26,390.56-36,397.74-20,438.32

Finding the Fourth Proportional to 26,390.56, 36,397.74 and 20,438.32

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Solution

The fourth proportional to 26,390.56, 36,397.74 and 20,438.32 is: 28,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,390.56 : 36,397.74 = 20,438.32 : x
  2. Step 2: Convert to fraction form
    26,390.56/36,397.74 = 20,438.32/x
  3. Step 3: Cross multiply
    26,390.56x = 36,397.74 × 20,438.32
  4. Step 4: Simplify right side
    26,390.56x = 743,908,657.40
  5. Step 5: Solve for x
    x = 743,908,657.40/26,390.56
  6. Step 6: Final answer
    x = 28,188.44

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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.