Home / 20,985.08-31,477.88-6,194.21

Finding the Fourth Proportional to 20,985.08, 31,477.88 and 6,194.21

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Solution

The fourth proportional to 20,985.08, 31,477.88 and 6,194.21 is: 9,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.08 : 31,477.88 = 6,194.21 : x
  2. Step 2: Convert to fraction form
    20,985.08/31,477.88 = 6,194.21/x
  3. Step 3: Cross multiply
    20,985.08x = 31,477.88 × 6,194.21
  4. Step 4: Simplify right side
    20,985.08x = 194,980,457.17
  5. Step 5: Solve for x
    x = 194,980,457.17/20,985.08
  6. Step 6: Final answer
    x = 9,291.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.