Home / 19,438.18-26,800.16-12,713.15

Finding the Fourth Proportional to 19,438.18, 26,800.16 and 12,713.15

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Solution

The fourth proportional to 19,438.18, 26,800.16 and 12,713.15 is: 17,528.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.18 : 26,800.16 = 12,713.15 : x
  2. Step 2: Convert to fraction form
    19,438.18/26,800.16 = 12,713.15/x
  3. Step 3: Cross multiply
    19,438.18x = 26,800.16 × 12,713.15
  4. Step 4: Simplify right side
    19,438.18x = 340,714,552.89
  5. Step 5: Solve for x
    x = 340,714,552.89/19,438.18
  6. Step 6: Final answer
    x = 17,528.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.