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Finding the Fourth Proportional to 19,209.92, 26,510.40 and 10,827.20

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Solution

The fourth proportional to 19,209.92, 26,510.40 and 10,827.20 is: 14,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.92 : 26,510.40 = 10,827.20 : x
  2. Step 2: Convert to fraction form
    19,209.92/26,510.40 = 10,827.20/x
  3. Step 3: Cross multiply
    19,209.92x = 26,510.40 × 10,827.20
  4. Step 4: Simplify right side
    19,209.92x = 287,033,402.88
  5. Step 5: Solve for x
    x = 287,033,402.88/19,209.92
  6. Step 6: Final answer
    x = 14,941.94

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Double scale
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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.