Home / 39,875.07-55,027.65-21,725.70

Finding the Fourth Proportional to 39,875.07, 55,027.65 and 21,725.70

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Solution

The fourth proportional to 39,875.07, 55,027.65 and 21,725.70 is: 29,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.07 : 55,027.65 = 21,725.70 : x
  2. Step 2: Convert to fraction form
    39,875.07/55,027.65 = 21,725.70/x
  3. Step 3: Cross multiply
    39,875.07x = 55,027.65 × 21,725.70
  4. Step 4: Simplify right side
    39,875.07x = 1,195,514,215.61
  5. Step 5: Solve for x
    x = 1,195,514,215.61/39,875.07
  6. Step 6: Final answer
    x = 29,981.50

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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.