Home / 15,741.51-21,720.98-8,934.47

Finding the Fourth Proportional to 15,741.51, 21,720.98 and 8,934.47

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Solution

The fourth proportional to 15,741.51, 21,720.98 and 8,934.47 is: 12,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.51 : 21,720.98 = 8,934.47 : x
  2. Step 2: Convert to fraction form
    15,741.51/21,720.98 = 8,934.47/x
  3. Step 3: Cross multiply
    15,741.51x = 21,720.98 × 8,934.47
  4. Step 4: Simplify right side
    15,741.51x = 194,065,290.90
  5. Step 5: Solve for x
    x = 194,065,290.90/15,741.51
  6. Step 6: Final answer
    x = 12,328.25

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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.