Home / 15,343.07-21,173.72-8,970.21

Finding the Fourth Proportional to 15,343.07, 21,173.72 and 8,970.21

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Solution

The fourth proportional to 15,343.07, 21,173.72 and 8,970.21 is: 12,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.07 : 21,173.72 = 8,970.21 : x
  2. Step 2: Convert to fraction form
    15,343.07/21,173.72 = 8,970.21/x
  3. Step 3: Cross multiply
    15,343.07x = 21,173.72 × 8,970.21
  4. Step 4: Simplify right side
    15,343.07x = 189,932,670.03
  5. Step 5: Solve for x
    x = 189,932,670.03/15,343.07
  6. Step 6: Final answer
    x = 12,379.06

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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.