Home / 12,590.44-18,875.58-8,434.60

Finding the Fourth Proportional to 12,590.44, 18,875.58 and 8,434.60

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Solution

The fourth proportional to 12,590.44, 18,875.58 and 8,434.60 is: 12,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.44 : 18,875.58 = 8,434.60 : x
  2. Step 2: Convert to fraction form
    12,590.44/18,875.58 = 8,434.60/x
  3. Step 3: Cross multiply
    12,590.44x = 18,875.58 × 8,434.60
  4. Step 4: Simplify right side
    12,590.44x = 159,207,967.07
  5. Step 5: Solve for x
    x = 159,207,967.07/12,590.44
  6. Step 6: Final answer
    x = 12,645.15

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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.