Home / 12,221,368-18,331,935.28-7,430,380

Finding the Fourth Proportional to 12,221,368, 18,331,935.28 and 7,430,380

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Solution

The fourth proportional to 12,221,368, 18,331,935.28 and 7,430,380 is: 11,145,499.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221,368 : 18,331,935.28 = 7,430,380 : x
  2. Step 2: Convert to fraction form
    12,221,368/18,331,935.28 = 7,430,380/x
  3. Step 3: Cross multiply
    12,221,368x = 18,331,935.28 × 7,430,380
  4. Step 4: Simplify right side
    12,221,368x = 136,213,245,265,806.41
  5. Step 5: Solve for x
    x = 136,213,245,265,806.41/12,221,368
  6. Step 6: Final answer
    x = 11,145,499.04

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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.