Home / 39,623.63-54,681.96-21,718.62

Finding the Fourth Proportional to 39,623.63, 54,681.96 and 21,718.62

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Solution

The fourth proportional to 39,623.63, 54,681.96 and 21,718.62 is: 29,972.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.63 : 54,681.96 = 21,718.62 : x
  2. Step 2: Convert to fraction form
    39,623.63/54,681.96 = 21,718.62/x
  3. Step 3: Cross multiply
    39,623.63x = 54,681.96 × 21,718.62
  4. Step 4: Simplify right side
    39,623.63x = 1,187,616,710.10
  5. Step 5: Solve for x
    x = 1,187,616,710.10/39,623.63
  6. Step 6: Final answer
    x = 29,972.44

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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.