Home / 39,689.96-54,774.08-21,784.77

Finding the Fourth Proportional to 39,689.96, 54,774.08 and 21,784.77

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Solution

The fourth proportional to 39,689.96, 54,774.08 and 21,784.77 is: 30,064.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,689.96 : 54,774.08 = 21,784.77 : x
  2. Step 2: Convert to fraction form
    39,689.96/54,774.08 = 21,784.77/x
  3. Step 3: Cross multiply
    39,689.96x = 54,774.08 × 21,784.77
  4. Step 4: Simplify right side
    39,689.96x = 1,193,240,625.84
  5. Step 5: Solve for x
    x = 1,193,240,625.84/39,689.96
  6. Step 6: Final answer
    x = 30,064.05

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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.