Home / 13,140.96-19,740.60-12,726.24

Finding the Fourth Proportional to 13,140.96, 19,740.60 and 12,726.24

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Solution

The fourth proportional to 13,140.96, 19,740.60 and 12,726.24 is: 19,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.96 : 19,740.60 = 12,726.24 : x
  2. Step 2: Convert to fraction form
    13,140.96/19,740.60 = 12,726.24/x
  3. Step 3: Cross multiply
    13,140.96x = 19,740.60 × 12,726.24
  4. Step 4: Simplify right side
    13,140.96x = 251,223,613.34
  5. Step 5: Solve for x
    x = 251,223,613.34/13,140.96
  6. Step 6: Final answer
    x = 19,117.60

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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.