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Finding the Fourth Proportional to 27,762.94, 38,312.49 and 15,826.48

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Solution

The fourth proportional to 27,762.94, 38,312.49 and 15,826.48 is: 21,840.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,762.94 : 38,312.49 = 15,826.48 : x
  2. Step 2: Convert to fraction form
    27,762.94/38,312.49 = 15,826.48/x
  3. Step 3: Cross multiply
    27,762.94x = 38,312.49 × 15,826.48
  4. Step 4: Simplify right side
    27,762.94x = 606,351,856.74
  5. Step 5: Solve for x
    x = 606,351,856.74/27,762.94
  6. Step 6: Final answer
    x = 21,840.33

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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.