Home / 9,989,667.39-13,785,775.65-5,405,987.55

Finding the Fourth Proportional to 9,989,667.39, 13,785,775.65 and 5,405,987.55

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Solution

The fourth proportional to 9,989,667.39, 13,785,775.65 and 5,405,987.55 is: 7,460,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,667.39 : 13,785,775.65 = 5,405,987.55 : x
  2. Step 2: Convert to fraction form
    9,989,667.39/13,785,775.65 = 5,405,987.55/x
  3. Step 3: Cross multiply
    9,989,667.39x = 13,785,775.65 × 5,405,987.55
  4. Step 4: Simplify right side
    9,989,667.39x = 74,525,731,530,993.16
  5. Step 5: Solve for x
    x = 74,525,731,530,993.16/9,989,667.39
  6. Step 6: Final answer
    x = 7,460,281.57

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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.