Home / 42,855.99-64,325.45-20,684.97

Finding the Fourth Proportional to 42,855.99, 64,325.45 and 20,684.97

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Solution

The fourth proportional to 42,855.99, 64,325.45 and 20,684.97 is: 31,047.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,855.99 : 64,325.45 = 20,684.97 : x
  2. Step 2: Convert to fraction form
    42,855.99/64,325.45 = 20,684.97/x
  3. Step 3: Cross multiply
    42,855.99x = 64,325.45 × 20,684.97
  4. Step 4: Simplify right side
    42,855.99x = 1,330,569,900.06
  5. Step 5: Solve for x
    x = 1,330,569,900.06/42,855.99
  6. Step 6: Final answer
    x = 31,047.47

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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.