Home / 13,147,278.40-18,143,205.87-7,346,064.70

Finding the Fourth Proportional to 13,147,278.40, 18,143,205.87 and 7,346,064.70

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Solution

The fourth proportional to 13,147,278.40, 18,143,205.87 and 7,346,064.70 is: 10,137,547.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147,278.40 : 18,143,205.87 = 7,346,064.70 : x
  2. Step 2: Convert to fraction form
    13,147,278.40/18,143,205.87 = 7,346,064.70/x
  3. Step 3: Cross multiply
    13,147,278.40x = 18,143,205.87 × 7,346,064.70
  4. Step 4: Simplify right side
    13,147,278.40x = 133,281,164,186,439.80
  5. Step 5: Solve for x
    x = 133,281,164,186,439.80/13,147,278.40
  6. Step 6: Final answer
    x = 10,137,547.87

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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.