Home / 12,382,678.20-18,537,275.70-9,201,905.40

Finding the Fourth Proportional to 12,382,678.20, 18,537,275.70 and 9,201,905.40

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Solution

The fourth proportional to 12,382,678.20, 18,537,275.70 and 9,201,905.40 is: 13,775,554.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382,678.20 : 18,537,275.70 = 9,201,905.40 : x
  2. Step 2: Convert to fraction form
    12,382,678.20/18,537,275.70 = 9,201,905.40/x
  3. Step 3: Cross multiply
    12,382,678.20x = 18,537,275.70 × 9,201,905.40
  4. Step 4: Simplify right side
    12,382,678.20x = 170,578,257,365,118.78
  5. Step 5: Solve for x
    x = 170,578,257,365,118.78/12,382,678.20
  6. Step 6: Final answer
    x = 13,775,554.42

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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.