Home / 21,295.49-29,386.40-12,342.29

Finding the Fourth Proportional to 21,295.49, 29,386.40 and 12,342.29

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Solution

The fourth proportional to 21,295.49, 29,386.40 and 12,342.29 is: 17,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.49 : 29,386.40 = 12,342.29 : x
  2. Step 2: Convert to fraction form
    21,295.49/29,386.40 = 12,342.29/x
  3. Step 3: Cross multiply
    21,295.49x = 29,386.40 × 12,342.29
  4. Step 4: Simplify right side
    21,295.49x = 362,695,262.21
  5. Step 5: Solve for x
    x = 362,695,262.21/21,295.49
  6. Step 6: Final answer
    x = 17,031.56

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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.