Home / 13,420,440.81-18,520,732.58-7,619,762.25

Finding the Fourth Proportional to 13,420,440.81, 18,520,732.58 and 7,619,762.25

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Solution

The fourth proportional to 13,420,440.81, 18,520,732.58 and 7,619,762.25 is: 10,515,569.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420,440.81 : 18,520,732.58 = 7,619,762.25 : x
  2. Step 2: Convert to fraction form
    13,420,440.81/18,520,732.58 = 7,619,762.25/x
  3. Step 3: Cross multiply
    13,420,440.81x = 18,520,732.58 × 7,619,762.25
  4. Step 4: Simplify right side
    13,420,440.81x = 141,123,578,917,330.28
  5. Step 5: Solve for x
    x = 141,123,578,917,330.28/13,420,440.81
  6. Step 6: Final answer
    x = 10,515,569.56

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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.