Home / 39,288.55-54,219.34-21,384.71

Finding the Fourth Proportional to 39,288.55, 54,219.34 and 21,384.71

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Solution

The fourth proportional to 39,288.55, 54,219.34 and 21,384.71 is: 29,511.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.55 : 54,219.34 = 21,384.71 : x
  2. Step 2: Convert to fraction form
    39,288.55/54,219.34 = 21,384.71/x
  3. Step 3: Cross multiply
    39,288.55x = 54,219.34 × 21,384.71
  4. Step 4: Simplify right side
    39,288.55x = 1,159,464,889.02
  5. Step 5: Solve for x
    x = 1,159,464,889.02/39,288.55
  6. Step 6: Final answer
    x = 29,511.53

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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.