Home / 28,155,980.81-38,855,253.52-15,278,924.81

Finding the Fourth Proportional to 28,155,980.81, 38,855,253.52 and 15,278,924.81

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Solution

The fourth proportional to 28,155,980.81, 38,855,253.52 and 15,278,924.81 is: 21,084,916.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,980.81 : 38,855,253.52 = 15,278,924.81 : x
  2. Step 2: Convert to fraction form
    28,155,980.81/38,855,253.52 = 15,278,924.81/x
  3. Step 3: Cross multiply
    28,155,980.81x = 38,855,253.52 × 15,278,924.81
  4. Step 4: Simplify right side
    28,155,980.81x = 593,666,497,121,804.62
  5. Step 5: Solve for x
    x = 593,666,497,121,804.62/28,155,980.81
  6. Step 6: Final answer
    x = 21,084,916.24

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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.