Home / 21,263.80-29,347.64-12,316.74

Finding the Fourth Proportional to 21,263.80, 29,347.64 and 12,316.74

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Solution

The fourth proportional to 21,263.80, 29,347.64 and 12,316.74 is: 16,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.80 : 29,347.64 = 12,316.74 : x
  2. Step 2: Convert to fraction form
    21,263.80/29,347.64 = 12,316.74/x
  3. Step 3: Cross multiply
    21,263.80x = 29,347.64 × 12,316.74
  4. Step 4: Simplify right side
    21,263.80x = 361,467,251.49
  5. Step 5: Solve for x
    x = 361,467,251.49/21,263.80
  6. Step 6: Final answer
    x = 16,999.18

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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.