Home / 27,723.48-38,254.86-15,785.16

Finding the Fourth Proportional to 27,723.48, 38,254.86 and 15,785.16

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Solution

The fourth proportional to 27,723.48, 38,254.86 and 15,785.16 is: 21,781.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.48 : 38,254.86 = 15,785.16 : x
  2. Step 2: Convert to fraction form
    27,723.48/38,254.86 = 15,785.16/x
  3. Step 3: Cross multiply
    27,723.48x = 38,254.86 × 15,785.16
  4. Step 4: Simplify right side
    27,723.48x = 603,859,085.88
  5. Step 5: Solve for x
    x = 603,859,085.88/27,723.48
  6. Step 6: Final answer
    x = 21,781.50

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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.