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Finding the Fourth Proportional to 18,684,551.40, 28,026,827.10 and 11,472,700.20

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Solution

The fourth proportional to 18,684,551.40, 28,026,827.10 and 11,472,700.20 is: 17,209,050.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,551.40 : 28,026,827.10 = 11,472,700.20 : x
  2. Step 2: Convert to fraction form
    18,684,551.40/28,026,827.10 = 11,472,700.20/x
  3. Step 3: Cross multiply
    18,684,551.40x = 28,026,827.10 × 11,472,700.20
  4. Step 4: Simplify right side
    18,684,551.40x = 321,543,384,875,535.44
  5. Step 5: Solve for x
    x = 321,543,384,875,535.44/18,684,551.40
  6. Step 6: Final answer
    x = 17,209,050.30

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.