Home / 21,776.85-30,054.92-12,345.75

Finding the Fourth Proportional to 21,776.85, 30,054.92 and 12,345.75

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Solution

The fourth proportional to 21,776.85, 30,054.92 and 12,345.75 is: 17,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.85 : 30,054.92 = 12,345.75 : x
  2. Step 2: Convert to fraction form
    21,776.85/30,054.92 = 12,345.75/x
  3. Step 3: Cross multiply
    21,776.85x = 30,054.92 × 12,345.75
  4. Step 4: Simplify right side
    21,776.85x = 371,050,466.86
  5. Step 5: Solve for x
    x = 371,050,466.86/21,776.85
  6. Step 6: Final answer
    x = 17,038.76

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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.