Home / 21,244.48-29,315.08-12,290.31

Finding the Fourth Proportional to 21,244.48, 29,315.08 and 12,290.31

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Solution

The fourth proportional to 21,244.48, 29,315.08 and 12,290.31 is: 16,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.48 : 29,315.08 = 12,290.31 : x
  2. Step 2: Convert to fraction form
    21,244.48/29,315.08 = 12,290.31/x
  3. Step 3: Cross multiply
    21,244.48x = 29,315.08 × 12,290.31
  4. Step 4: Simplify right side
    21,244.48x = 360,291,395.01
  5. Step 5: Solve for x
    x = 360,291,395.01/21,244.48
  6. Step 6: Final answer
    x = 16,959.30

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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.