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Finding the Fourth Proportional to 18,782.08, 28,314.12 and 17,513.76

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Solution

The fourth proportional to 18,782.08, 28,314.12 and 17,513.76 is: 26,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.08 : 28,314.12 = 17,513.76 : x
  2. Step 2: Convert to fraction form
    18,782.08/28,314.12 = 17,513.76/x
  3. Step 3: Cross multiply
    18,782.08x = 28,314.12 × 17,513.76
  4. Step 4: Simplify right side
    18,782.08x = 495,886,702.29
  5. Step 5: Solve for x
    x = 495,886,702.29/18,782.08
  6. Step 6: Final answer
    x = 26,402.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.