Home / 20,140.93-27,802.23-13,424.10

Finding the Fourth Proportional to 20,140.93, 27,802.23 and 13,424.10

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Solution

The fourth proportional to 20,140.93, 27,802.23 and 13,424.10 is: 18,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.93 : 27,802.23 = 13,424.10 : x
  2. Step 2: Convert to fraction form
    20,140.93/27,802.23 = 13,424.10/x
  3. Step 3: Cross multiply
    20,140.93x = 27,802.23 × 13,424.10
  4. Step 4: Simplify right side
    20,140.93x = 373,219,915.74
  5. Step 5: Solve for x
    x = 373,219,915.74/20,140.93
  6. Step 6: Final answer
    x = 18,530.42

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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.