Home / 20,328.48-28,051.38-11,374.74

Finding the Fourth Proportional to 20,328.48, 28,051.38 and 11,374.74

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Solution

The fourth proportional to 20,328.48, 28,051.38 and 11,374.74 is: 15,696.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.48 : 28,051.38 = 11,374.74 : x
  2. Step 2: Convert to fraction form
    20,328.48/28,051.38 = 11,374.74/x
  3. Step 3: Cross multiply
    20,328.48x = 28,051.38 × 11,374.74
  4. Step 4: Simplify right side
    20,328.48x = 319,077,154.14
  5. Step 5: Solve for x
    x = 319,077,154.14/20,328.48
  6. Step 6: Final answer
    x = 15,696.07

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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.