Home / 12,721,405.23-17,555,525.94-6,920,173.14

Finding the Fourth Proportional to 12,721,405.23, 17,555,525.94 and 6,920,173.14

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Solution

The fourth proportional to 12,721,405.23, 17,555,525.94 and 6,920,173.14 is: 9,549,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721,405.23 : 17,555,525.94 = 6,920,173.14 : x
  2. Step 2: Convert to fraction form
    12,721,405.23/17,555,525.94 = 6,920,173.14/x
  3. Step 3: Cross multiply
    12,721,405.23x = 17,555,525.94 × 6,920,173.14
  4. Step 4: Simplify right side
    12,721,405.23x = 121,487,279,068,561.25
  5. Step 5: Solve for x
    x = 121,487,279,068,561.25/12,721,405.23
  6. Step 6: Final answer
    x = 9,549,831.71

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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.