Home / 39,804.93-54,931.72-21,656.68

Finding the Fourth Proportional to 39,804.93, 54,931.72 and 21,656.68

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Solution

The fourth proportional to 39,804.93, 54,931.72 and 21,656.68 is: 29,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.93 : 54,931.72 = 21,656.68 : x
  2. Step 2: Convert to fraction form
    39,804.93/54,931.72 = 21,656.68/x
  3. Step 3: Cross multiply
    39,804.93x = 54,931.72 × 21,656.68
  4. Step 4: Simplify right side
    39,804.93x = 1,189,638,713.56
  5. Step 5: Solve for x
    x = 1,189,638,713.56/39,804.93
  6. Step 6: Final answer
    x = 29,886.72

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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.