Home / 26,688.84-36,820.86-20,558.40

Finding the Fourth Proportional to 26,688.84, 36,820.86 and 20,558.40

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Solution

The fourth proportional to 26,688.84, 36,820.86 and 20,558.40 is: 28,363.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,688.84 : 36,820.86 = 20,558.40 : x
  2. Step 2: Convert to fraction form
    26,688.84/36,820.86 = 20,558.40/x
  3. Step 3: Cross multiply
    26,688.84x = 36,820.86 × 20,558.40
  4. Step 4: Simplify right side
    26,688.84x = 756,977,968.22
  5. Step 5: Solve for x
    x = 756,977,968.22/26,688.84
  6. Step 6: Final answer
    x = 28,363.09

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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.