Home / 18,719,272-28,075,356.96-9,125,001.28

Finding the Fourth Proportional to 18,719,272, 28,075,356.96 and 9,125,001.28

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Solution

The fourth proportional to 18,719,272, 28,075,356.96 and 9,125,001.28 is: 13,685,770.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719,272 : 28,075,356.96 = 9,125,001.28 : x
  2. Step 2: Convert to fraction form
    18,719,272/28,075,356.96 = 9,125,001.28/x
  3. Step 3: Cross multiply
    18,719,272x = 28,075,356.96 × 9,125,001.28
  4. Step 4: Simplify right side
    18,719,272x = 256,187,668,196,456.91
  5. Step 5: Solve for x
    x = 256,187,668,196,456.91/18,719,272
  6. Step 6: Final answer
    x = 13,685,770.91

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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.