Home / 19,488.11-26,875.65-12,771.30

Finding the Fourth Proportional to 19,488.11, 26,875.65 and 12,771.30

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Solution

The fourth proportional to 19,488.11, 26,875.65 and 12,771.30 is: 17,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.11 : 26,875.65 = 12,771.30 : x
  2. Step 2: Convert to fraction form
    19,488.11/26,875.65 = 12,771.30/x
  3. Step 3: Cross multiply
    19,488.11x = 26,875.65 × 12,771.30
  4. Step 4: Simplify right side
    19,488.11x = 343,236,790.61
  5. Step 5: Solve for x
    x = 343,236,790.61/19,488.11
  6. Step 6: Final answer
    x = 17,612.63

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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.