Home / 9,989,409.75-13,785,397.65-5,405,731.17

Finding the Fourth Proportional to 9,989,409.75, 13,785,397.65 and 5,405,731.17

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Solution

The fourth proportional to 9,989,409.75, 13,785,397.65 and 5,405,731.17 is: 7,459,915.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,409.75 : 13,785,397.65 = 5,405,731.17 : x
  2. Step 2: Convert to fraction form
    9,989,409.75/13,785,397.65 = 5,405,731.17/x
  3. Step 3: Cross multiply
    9,989,409.75x = 13,785,397.65 × 5,405,731.17
  4. Step 4: Simplify right side
    9,989,409.75x = 74,520,153,767,449.75
  5. Step 5: Solve for x
    x = 74,520,153,767,449.75/9,989,409.75
  6. Step 6: Final answer
    x = 7,459,915.61

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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.