Home / 12,989,549.52-17,925,613.23-7,188,731.28

Finding the Fourth Proportional to 12,989,549.52, 17,925,613.23 and 7,188,731.28

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Solution

The fourth proportional to 12,989,549.52, 17,925,613.23 and 7,188,731.28 is: 9,920,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,549.52 : 17,925,613.23 = 7,188,731.28 : x
  2. Step 2: Convert to fraction form
    12,989,549.52/17,925,613.23 = 7,188,731.28/x
  3. Step 3: Cross multiply
    12,989,549.52x = 17,925,613.23 × 7,188,731.28
  4. Step 4: Simplify right side
    12,989,549.52x = 128,862,416,539,682.84
  5. Step 5: Solve for x
    x = 128,862,416,539,682.84/12,989,549.52
  6. Step 6: Final answer
    x = 9,920,468.48

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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.