Home / 21,295.36-29,386.92-13,341.88

Finding the Fourth Proportional to 21,295.36, 29,386.92 and 13,341.88

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Solution

The fourth proportional to 21,295.36, 29,386.92 and 13,341.88 is: 18,411.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.36 : 29,386.92 = 13,341.88 : x
  2. Step 2: Convert to fraction form
    21,295.36/29,386.92 = 13,341.88/x
  3. Step 3: Cross multiply
    21,295.36x = 29,386.92 × 13,341.88
  4. Step 4: Simplify right side
    21,295.36x = 392,076,760.21
  5. Step 5: Solve for x
    x = 392,076,760.21/21,295.36
  6. Step 6: Final answer
    x = 18,411.37

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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.