Home / 9,989,653.72-13,785,756.60-5,405,973.88

Finding the Fourth Proportional to 9,989,653.72, 13,785,756.60 and 5,405,973.88

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Solution

The fourth proportional to 9,989,653.72, 13,785,756.60 and 5,405,973.88 is: 7,460,262.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,653.72 : 13,785,756.60 = 5,405,973.88 : x
  2. Step 2: Convert to fraction form
    9,989,653.72/13,785,756.60 = 5,405,973.88/x
  3. Step 3: Cross multiply
    9,989,653.72x = 13,785,756.60 × 5,405,973.88
  4. Step 4: Simplify right side
    9,989,653.72x = 74,525,440,095,637.61
  5. Step 5: Solve for x
    x = 74,525,440,095,637.61/9,989,653.72
  6. Step 6: Final answer
    x = 7,460,262.61

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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.