Home / 13,579,664.60-18,740,122.80-7,778,443.16

Finding the Fourth Proportional to 13,579,664.60, 18,740,122.80 and 7,778,443.16

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Solution

The fourth proportional to 13,579,664.60, 18,740,122.80 and 7,778,443.16 is: 10,734,357.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579,664.60 : 18,740,122.80 = 7,778,443.16 : x
  2. Step 2: Convert to fraction form
    13,579,664.60/18,740,122.80 = 7,778,443.16/x
  3. Step 3: Cross multiply
    13,579,664.60x = 18,740,122.80 × 7,778,443.16
  4. Step 4: Simplify right side
    13,579,664.60x = 145,768,980,011,220.06
  5. Step 5: Solve for x
    x = 145,768,980,011,220.06/13,579,664.60
  6. Step 6: Final answer
    x = 10,734,357.90

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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.