Home / 39,288.63-54,219.47-21,384.80

Finding the Fourth Proportional to 39,288.63, 54,219.47 and 21,384.80

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Solution

The fourth proportional to 39,288.63, 54,219.47 and 21,384.80 is: 29,511.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.63 : 54,219.47 = 21,384.80 : x
  2. Step 2: Convert to fraction form
    39,288.63/54,219.47 = 21,384.80/x
  3. Step 3: Cross multiply
    39,288.63x = 54,219.47 × 21,384.80
  4. Step 4: Simplify right side
    39,288.63x = 1,159,472,522.06
  5. Step 5: Solve for x
    x = 1,159,472,522.06/39,288.63
  6. Step 6: Final answer
    x = 29,511.66

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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.