Home / 19,147.64-26,410.76-12,421.25

Finding the Fourth Proportional to 19,147.64, 26,410.76 and 12,421.25

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Solution

The fourth proportional to 19,147.64, 26,410.76 and 12,421.25 is: 17,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.64 : 26,410.76 = 12,421.25 : x
  2. Step 2: Convert to fraction form
    19,147.64/26,410.76 = 12,421.25/x
  3. Step 3: Cross multiply
    19,147.64x = 26,410.76 × 12,421.25
  4. Step 4: Simplify right side
    19,147.64x = 328,054,604.11
  5. Step 5: Solve for x
    x = 328,054,604.11/19,147.64
  6. Step 6: Final answer
    x = 17,132.90

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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.