Home / 13,639,633.63-18,847,315.86-9,712,571.89

Finding the Fourth Proportional to 13,639,633.63, 18,847,315.86 and 9,712,571.89

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Solution

The fourth proportional to 13,639,633.63, 18,847,315.86 and 9,712,571.89 is: 13,420,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639,633.63 : 18,847,315.86 = 9,712,571.89 : x
  2. Step 2: Convert to fraction form
    13,639,633.63/18,847,315.86 = 9,712,571.89/x
  3. Step 3: Cross multiply
    13,639,633.63x = 18,847,315.86 × 9,712,571.89
  4. Step 4: Simplify right side
    13,639,633.63x = 183,055,910,223,787.19
  5. Step 5: Solve for x
    x = 183,055,910,223,787.19/13,639,633.63
  6. Step 6: Final answer
    x = 13,420,881.76

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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.