Home / 20,328.34-28,053-11,376.22

Finding the Fourth Proportional to 20,328.34, 28,053 and 11,376.22

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Solution

The fourth proportional to 20,328.34, 28,053 and 11,376.22 is: 15,699.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.34 : 28,053 = 11,376.22 : x
  2. Step 2: Convert to fraction form
    20,328.34/28,053 = 11,376.22/x
  3. Step 3: Cross multiply
    20,328.34x = 28,053 × 11,376.22
  4. Step 4: Simplify right side
    20,328.34x = 319,137,099.66
  5. Step 5: Solve for x
    x = 319,137,099.66/20,328.34
  6. Step 6: Final answer
    x = 15,699.12

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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.