Home / 20,467.56-28,248.63-12,918.01

Finding the Fourth Proportional to 20,467.56, 28,248.63 and 12,918.01

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Solution

The fourth proportional to 20,467.56, 28,248.63 and 12,918.01 is: 17,828.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.56 : 28,248.63 = 12,918.01 : x
  2. Step 2: Convert to fraction form
    20,467.56/28,248.63 = 12,918.01/x
  3. Step 3: Cross multiply
    20,467.56x = 28,248.63 × 12,918.01
  4. Step 4: Simplify right side
    20,467.56x = 364,915,878.99
  5. Step 5: Solve for x
    x = 364,915,878.99/20,467.56
  6. Step 6: Final answer
    x = 17,828.99

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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.