Home / 21,302.49-29,397.50-12,809.48

Finding the Fourth Proportional to 21,302.49, 29,397.50 and 12,809.48

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Solution

The fourth proportional to 21,302.49, 29,397.50 and 12,809.48 is: 17,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.49 : 29,397.50 = 12,809.48 : x
  2. Step 2: Convert to fraction form
    21,302.49/29,397.50 = 12,809.48/x
  3. Step 3: Cross multiply
    21,302.49x = 29,397.50 × 12,809.48
  4. Step 4: Simplify right side
    21,302.49x = 376,566,477.27
  5. Step 5: Solve for x
    x = 376,566,477.27/21,302.49
  6. Step 6: Final answer
    x = 17,677.11

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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.