Home / 13,576,878.12-18,735,960.09-7,381,924.77

Finding the Fourth Proportional to 13,576,878.12, 18,735,960.09 and 7,381,924.77

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Solution

The fourth proportional to 13,576,878.12, 18,735,960.09 and 7,381,924.77 is: 10,186,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576,878.12 : 18,735,960.09 = 7,381,924.77 : x
  2. Step 2: Convert to fraction form
    13,576,878.12/18,735,960.09 = 7,381,924.77/x
  3. Step 3: Cross multiply
    13,576,878.12x = 18,735,960.09 × 7,381,924.77
  4. Step 4: Simplify right side
    13,576,878.12x = 138,307,447,878,102.42
  5. Step 5: Solve for x
    x = 138,307,447,878,102.42/13,576,878.12
  6. Step 6: Final answer
    x = 10,186,984.57

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1.5x scale

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.