Home / 21,566.79-29,749.98-12,950.77

Finding the Fourth Proportional to 21,566.79, 29,749.98 and 12,950.77

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Solution

The fourth proportional to 21,566.79, 29,749.98 and 12,950.77 is: 17,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,566.79 : 29,749.98 = 12,950.77 : x
  2. Step 2: Convert to fraction form
    21,566.79/29,749.98 = 12,950.77/x
  3. Step 3: Cross multiply
    21,566.79x = 29,749.98 × 12,950.77
  4. Step 4: Simplify right side
    21,566.79x = 385,285,148.48
  5. Step 5: Solve for x
    x = 385,285,148.48/21,566.79
  6. Step 6: Final answer
    x = 17,864.74

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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.