Home / 26,688.34-36,820.17-20,557.90

Finding the Fourth Proportional to 26,688.34, 36,820.17 and 20,557.90

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Solution

The fourth proportional to 26,688.34, 36,820.17 and 20,557.90 is: 28,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,688.34 : 36,820.17 = 20,557.90 : x
  2. Step 2: Convert to fraction form
    26,688.34/36,820.17 = 20,557.90/x
  3. Step 3: Cross multiply
    26,688.34x = 36,820.17 × 20,557.90
  4. Step 4: Simplify right side
    26,688.34x = 756,945,372.84
  5. Step 5: Solve for x
    x = 756,945,372.84/26,688.34
  6. Step 6: Final answer
    x = 28,362.40

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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.