Home / 39,589.47-54,631.35-21,681.09

Finding the Fourth Proportional to 39,589.47, 54,631.35 and 21,681.09

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Solution

The fourth proportional to 39,589.47, 54,631.35 and 21,681.09 is: 29,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.47 : 54,631.35 = 21,681.09 : x
  2. Step 2: Convert to fraction form
    39,589.47/54,631.35 = 21,681.09/x
  3. Step 3: Cross multiply
    39,589.47x = 54,631.35 × 21,681.09
  4. Step 4: Simplify right side
    39,589.47x = 1,184,467,216.17
  5. Step 5: Solve for x
    x = 1,184,467,216.17/39,589.47
  6. Step 6: Final answer
    x = 29,918.74

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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.