Home / 21,138,763.95-31,700,368.38-7,302,202.71

Finding the Fourth Proportional to 21,138,763.95, 31,700,368.38 and 7,302,202.71

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Solution

The fourth proportional to 21,138,763.95, 31,700,368.38 and 7,302,202.71 is: 10,950,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,763.95 : 31,700,368.38 = 7,302,202.71 : x
  2. Step 2: Convert to fraction form
    21,138,763.95/31,700,368.38 = 7,302,202.71/x
  3. Step 3: Cross multiply
    21,138,763.95x = 31,700,368.38 × 7,302,202.71
  4. Step 4: Simplify right side
    21,138,763.95x = 231,482,515,892,434.31
  5. Step 5: Solve for x
    x = 231,482,515,892,434.31/21,138,763.95
  6. Step 6: Final answer
    x = 10,950,617.38

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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.