Home / 39,339.08-54,288.55-21,434.07

Finding the Fourth Proportional to 39,339.08, 54,288.55 and 21,434.07

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Solution

The fourth proportional to 39,339.08, 54,288.55 and 21,434.07 is: 29,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.08 : 54,288.55 = 21,434.07 : x
  2. Step 2: Convert to fraction form
    39,339.08/54,288.55 = 21,434.07/x
  3. Step 3: Cross multiply
    39,339.08x = 54,288.55 × 21,434.07
  4. Step 4: Simplify right side
    39,339.08x = 1,163,624,580.90
  5. Step 5: Solve for x
    x = 1,163,624,580.90/39,339.08
  6. Step 6: Final answer
    x = 29,579.35

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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.