Home / 28,155,983.63-38,855,257.40-15,278,927.63

Finding the Fourth Proportional to 28,155,983.63, 38,855,257.40 and 15,278,927.63

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Solution

The fourth proportional to 28,155,983.63, 38,855,257.40 and 15,278,927.63 is: 21,084,920.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,983.63 : 38,855,257.40 = 15,278,927.63 : x
  2. Step 2: Convert to fraction form
    28,155,983.63/38,855,257.40 = 15,278,927.63/x
  3. Step 3: Cross multiply
    28,155,983.63x = 38,855,257.40 × 15,278,927.63
  4. Step 4: Simplify right side
    28,155,983.63x = 593,666,665,703,543
  5. Step 5: Solve for x
    x = 593,666,665,703,543/28,155,983.63
  6. Step 6: Final answer
    x = 21,084,920.12

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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.