Home / 13,680,626.95-18,878,973.91-7,485,648.76

Finding the Fourth Proportional to 13,680,626.95, 18,878,973.91 and 7,485,648.76

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Solution

The fourth proportional to 13,680,626.95, 18,878,973.91 and 7,485,648.76 is: 10,330,035.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680,626.95 : 18,878,973.91 = 7,485,648.76 : x
  2. Step 2: Convert to fraction form
    13,680,626.95/18,878,973.91 = 7,485,648.76/x
  3. Step 3: Cross multiply
    13,680,626.95x = 18,878,973.91 × 7,485,648.76
  4. Step 4: Simplify right side
    13,680,626.95x = 141,321,367,639,463.84
  5. Step 5: Solve for x
    x = 141,321,367,639,463.84/13,680,626.95
  6. Step 6: Final answer
    x = 10,330,035.91

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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.