Home / 39,405.94-54,379.18-21,501.07

Finding the Fourth Proportional to 39,405.94, 54,379.18 and 21,501.07

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Solution

The fourth proportional to 39,405.94, 54,379.18 and 21,501.07 is: 29,670.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,405.94 : 54,379.18 = 21,501.07 : x
  2. Step 2: Convert to fraction form
    39,405.94/54,379.18 = 21,501.07/x
  3. Step 3: Cross multiply
    39,405.94x = 54,379.18 × 21,501.07
  4. Step 4: Simplify right side
    39,405.94x = 1,169,210,555.72
  5. Step 5: Solve for x
    x = 1,169,210,555.72/39,405.94
  6. Step 6: Final answer
    x = 29,670.92

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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.