Home / 43,139.84-64,709.81-13,560.26

Finding the Fourth Proportional to 43,139.84, 64,709.81 and 13,560.26

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Solution

The fourth proportional to 43,139.84, 64,709.81 and 13,560.26 is: 20,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.84 : 64,709.81 = 13,560.26 : x
  2. Step 2: Convert to fraction form
    43,139.84/64,709.81 = 13,560.26/x
  3. Step 3: Cross multiply
    43,139.84x = 64,709.81 × 13,560.26
  4. Step 4: Simplify right side
    43,139.84x = 877,481,780.35
  5. Step 5: Solve for x
    x = 877,481,780.35/43,139.84
  6. Step 6: Final answer
    x = 20,340.40

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1.5x scale

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.