Home / 39,312.08-54,251.64-21,408.06

Finding the Fourth Proportional to 39,312.08, 54,251.64 and 21,408.06

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Solution

The fourth proportional to 39,312.08, 54,251.64 and 21,408.06 is: 29,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,312.08 : 54,251.64 = 21,408.06 : x
  2. Step 2: Convert to fraction form
    39,312.08/54,251.64 = 21,408.06/x
  3. Step 3: Cross multiply
    39,312.08x = 54,251.64 × 21,408.06
  4. Step 4: Simplify right side
    39,312.08x = 1,161,422,364.22
  5. Step 5: Solve for x
    x = 1,161,422,364.22/39,312.08
  6. Step 6: Final answer
    x = 29,543.65

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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.