Home / 26,123.40-39,130.86-12,756.05

Finding the Fourth Proportional to 26,123.40, 39,130.86 and 12,756.05

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Solution

The fourth proportional to 26,123.40, 39,130.86 and 12,756.05 is: 19,107.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,123.40 : 39,130.86 = 12,756.05 : x
  2. Step 2: Convert to fraction form
    26,123.40/39,130.86 = 12,756.05/x
  3. Step 3: Cross multiply
    26,123.40x = 39,130.86 × 12,756.05
  4. Step 4: Simplify right side
    26,123.40x = 499,155,011.05
  5. Step 5: Solve for x
    x = 499,155,011.05/26,123.40
  6. Step 6: Final answer
    x = 19,107.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.