Home / 43,139.12-64,715.22-13,554.18

Finding the Fourth Proportional to 43,139.12, 64,715.22 and 13,554.18

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Solution

The fourth proportional to 43,139.12, 64,715.22 and 13,554.18 is: 20,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.12 : 64,715.22 = 13,554.18 : x
  2. Step 2: Convert to fraction form
    43,139.12/64,715.22 = 13,554.18/x
  3. Step 3: Cross multiply
    43,139.12x = 64,715.22 × 13,554.18
  4. Step 4: Simplify right side
    43,139.12x = 877,161,740.62
  5. Step 5: Solve for x
    x = 877,161,740.62/43,139.12
  6. Step 6: Final answer
    x = 20,333.32

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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.