Home / 12,883,390.40-19,325,085.60-7,143,827.60

Finding the Fourth Proportional to 12,883,390.40, 19,325,085.60 and 7,143,827.60

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Solution

The fourth proportional to 12,883,390.40, 19,325,085.60 and 7,143,827.60 is: 10,715,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883,390.40 : 19,325,085.60 = 7,143,827.60 : x
  2. Step 2: Convert to fraction form
    12,883,390.40/19,325,085.60 = 7,143,827.60/x
  3. Step 3: Cross multiply
    12,883,390.40x = 19,325,085.60 × 7,143,827.60
  4. Step 4: Simplify right side
    12,883,390.40x = 138,055,079,881,642.56
  5. Step 5: Solve for x
    x = 138,055,079,881,642.56/12,883,390.40
  6. Step 6: Final answer
    x = 10,715,741.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.