Home / 12,237.48-18,341.64-6,390.90

Finding the Fourth Proportional to 12,237.48, 18,341.64 and 6,390.90

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Solution

The fourth proportional to 12,237.48, 18,341.64 and 6,390.90 is: 9,578.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.48 : 18,341.64 = 6,390.90 : x
  2. Step 2: Convert to fraction form
    12,237.48/18,341.64 = 6,390.90/x
  3. Step 3: Cross multiply
    12,237.48x = 18,341.64 × 6,390.90
  4. Step 4: Simplify right side
    12,237.48x = 117,219,587.08
  5. Step 5: Solve for x
    x = 117,219,587.08/12,237.48
  6. Step 6: Final answer
    x = 9,578.74

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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.