Home / 12,640,479.80-18,952,748.08-6,964,689.92

Finding the Fourth Proportional to 12,640,479.80, 18,952,748.08 and 6,964,689.92

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Solution

The fourth proportional to 12,640,479.80, 18,952,748.08 and 6,964,689.92 is: 10,442,642.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640,479.80 : 18,952,748.08 = 6,964,689.92 : x
  2. Step 2: Convert to fraction form
    12,640,479.80/18,952,748.08 = 6,964,689.92/x
  3. Step 3: Cross multiply
    12,640,479.80x = 18,952,748.08 × 6,964,689.92
  4. Step 4: Simplify right side
    12,640,479.80x = 132,000,013,509,075.34
  5. Step 5: Solve for x
    x = 132,000,013,509,075.34/12,640,479.80
  6. Step 6: Final answer
    x = 10,442,642.65

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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.