Home / 13,291,964.28-18,342,927.14-7,180,392.78

Finding the Fourth Proportional to 13,291,964.28, 18,342,927.14 and 7,180,392.78

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Solution

The fourth proportional to 13,291,964.28, 18,342,927.14 and 7,180,392.78 is: 9,908,950.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,964.28 : 18,342,927.14 = 7,180,392.78 : x
  2. Step 2: Convert to fraction form
    13,291,964.28/18,342,927.14 = 7,180,392.78/x
  3. Step 3: Cross multiply
    13,291,964.28x = 18,342,927.14 × 7,180,392.78
  4. Step 4: Simplify right side
    13,291,964.28x = 131,709,421,472,505.47
  5. Step 5: Solve for x
    x = 131,709,421,472,505.47/13,291,964.28
  6. Step 6: Final answer
    x = 9,908,950.91

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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.