Home / 13,652,590.80-20,478,886.20-12,613,328.40

Finding the Fourth Proportional to 13,652,590.80, 20,478,886.20 and 12,613,328.40

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Solution

The fourth proportional to 13,652,590.80, 20,478,886.20 and 12,613,328.40 is: 18,919,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652,590.80 : 20,478,886.20 = 12,613,328.40 : x
  2. Step 2: Convert to fraction form
    13,652,590.80/20,478,886.20 = 12,613,328.40/x
  3. Step 3: Cross multiply
    13,652,590.80x = 20,478,886.20 × 12,613,328.40
  4. Step 4: Simplify right side
    13,652,590.80x = 258,306,916,906,828.09
  5. Step 5: Solve for x
    x = 258,306,916,906,828.09/13,652,590.80
  6. Step 6: Final answer
    x = 18,919,992.60

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Similar ratio
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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.