Home / 12,989,566.20-17,925,636.06-7,188,747.96

Finding the Fourth Proportional to 12,989,566.20, 17,925,636.06 and 7,188,747.96

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Solution

The fourth proportional to 12,989,566.20, 17,925,636.06 and 7,188,747.96 is: 9,920,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,566.20 : 17,925,636.06 = 7,188,747.96 : x
  2. Step 2: Convert to fraction form
    12,989,566.20/17,925,636.06 = 7,188,747.96/x
  3. Step 3: Cross multiply
    12,989,566.20x = 17,925,636.06 × 7,188,747.96
  4. Step 4: Simplify right side
    12,989,566.20x = 128,862,879,658,027.42
  5. Step 5: Solve for x
    x = 128,862,879,658,027.42/12,989,566.20
  6. Step 6: Final answer
    x = 9,920,491.39

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1.5x scale

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.