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Finding the Fourth Proportional to 18,937,896.76, 28,411,054.98 and 8,835,006.52

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Solution

The fourth proportional to 18,937,896.76, 28,411,054.98 and 8,835,006.52 is: 13,254,473.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937,896.76 : 28,411,054.98 = 8,835,006.52 : x
  2. Step 2: Convert to fraction form
    18,937,896.76/28,411,054.98 = 8,835,006.52/x
  3. Step 3: Cross multiply
    18,937,896.76x = 28,411,054.98 × 8,835,006.52
  4. Step 4: Simplify right side
    18,937,896.76x = 251,011,855,988,378.47
  5. Step 5: Solve for x
    x = 251,011,855,988,378.47/18,937,896.76
  6. Step 6: Final answer
    x = 13,254,473.78

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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.