Home / 13,291,402.88-18,342,152.36-7,179,831.40

Finding the Fourth Proportional to 13,291,402.88, 18,342,152.36 and 7,179,831.40

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Solution

The fourth proportional to 13,291,402.88, 18,342,152.36 and 7,179,831.40 is: 9,908,176.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,402.88 : 18,342,152.36 = 7,179,831.40 : x
  2. Step 2: Convert to fraction form
    13,291,402.88/18,342,152.36 = 7,179,831.40/x
  3. Step 3: Cross multiply
    13,291,402.88x = 18,342,152.36 × 7,179,831.40
  4. Step 4: Simplify right side
    13,291,402.88x = 131,693,561,457,912.11
  5. Step 5: Solve for x
    x = 131,693,561,457,912.11/13,291,402.88
  6. Step 6: Final answer
    x = 9,908,176.18

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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.