Home / 21,263.08-29,345.40-12,310.48

Finding the Fourth Proportional to 21,263.08, 29,345.40 and 12,310.48

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Solution

The fourth proportional to 21,263.08, 29,345.40 and 12,310.48 is: 16,989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.08 : 29,345.40 = 12,310.48 : x
  2. Step 2: Convert to fraction form
    21,263.08/29,345.40 = 12,310.48/x
  3. Step 3: Cross multiply
    21,263.08x = 29,345.40 × 12,310.48
  4. Step 4: Simplify right side
    21,263.08x = 361,255,959.79
  5. Step 5: Solve for x
    x = 361,255,959.79/21,263.08
  6. Step 6: Final answer
    x = 16,989.82

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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.