Home / 19,403.70-26,764.47-15,861.30

Finding the Fourth Proportional to 19,403.70, 26,764.47 and 15,861.30

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Solution

The fourth proportional to 19,403.70, 26,764.47 and 15,861.30 is: 21,878.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,403.70 : 26,764.47 = 15,861.30 : x
  2. Step 2: Convert to fraction form
    19,403.70/26,764.47 = 15,861.30/x
  3. Step 3: Cross multiply
    19,403.70x = 26,764.47 × 15,861.30
  4. Step 4: Simplify right side
    19,403.70x = 424,519,288.01
  5. Step 5: Solve for x
    x = 424,519,288.01/19,403.70
  6. Step 6: Final answer
    x = 21,878.26

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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.