Home / 39,623.04-54,679.88-21,718.68

Finding the Fourth Proportional to 39,623.04, 54,679.88 and 21,718.68

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Solution

The fourth proportional to 39,623.04, 54,679.88 and 21,718.68 is: 29,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.04 : 54,679.88 = 21,718.68 : x
  2. Step 2: Convert to fraction form
    39,623.04/54,679.88 = 21,718.68/x
  3. Step 3: Cross multiply
    39,623.04x = 54,679.88 × 21,718.68
  4. Step 4: Simplify right side
    39,623.04x = 1,187,574,816.16
  5. Step 5: Solve for x
    x = 1,187,574,816.16/39,623.04
  6. Step 6: Final answer
    x = 29,971.82

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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.