Home / 39,288.08-54,218.70-21,384.25

Finding the Fourth Proportional to 39,288.08, 54,218.70 and 21,384.25

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Solution

The fourth proportional to 39,288.08, 54,218.70 and 21,384.25 is: 29,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.08 : 54,218.70 = 21,384.25 : x
  2. Step 2: Convert to fraction form
    39,288.08/54,218.70 = 21,384.25/x
  3. Step 3: Cross multiply
    39,288.08x = 54,218.70 × 21,384.25
  4. Step 4: Simplify right side
    39,288.08x = 1,159,426,099.93
  5. Step 5: Solve for x
    x = 1,159,426,099.93/39,288.08
  6. Step 6: Final answer
    x = 29,510.89

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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.