Home / 12,960,782.54-17,885,532.75-7,159,439.42

Finding the Fourth Proportional to 12,960,782.54, 17,885,532.75 and 7,159,439.42

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Solution

The fourth proportional to 12,960,782.54, 17,885,532.75 and 7,159,439.42 is: 9,879,834.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960,782.54 : 17,885,532.75 = 7,159,439.42 : x
  2. Step 2: Convert to fraction form
    12,960,782.54/17,885,532.75 = 7,159,439.42/x
  3. Step 3: Cross multiply
    12,960,782.54x = 17,885,532.75 × 7,159,439.42
  4. Step 4: Simplify right side
    12,960,782.54x = 128,050,388,218,051
  5. Step 5: Solve for x
    x = 128,050,388,218,051/12,960,782.54
  6. Step 6: Final answer
    x = 9,879,834.63

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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.