Home / 13,221,681.40-19,832,522.10-7,542,479.80

Finding the Fourth Proportional to 13,221,681.40, 19,832,522.10 and 7,542,479.80

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Solution

The fourth proportional to 13,221,681.40, 19,832,522.10 and 7,542,479.80 is: 11,313,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221,681.40 : 19,832,522.10 = 7,542,479.80 : x
  2. Step 2: Convert to fraction form
    13,221,681.40/19,832,522.10 = 7,542,479.80/x
  3. Step 3: Cross multiply
    13,221,681.40x = 19,832,522.10 × 7,542,479.80
  4. Step 4: Simplify right side
    13,221,681.40x = 149,586,397,322,303.59
  5. Step 5: Solve for x
    x = 149,586,397,322,303.59/13,221,681.40
  6. Step 6: Final answer
    x = 11,313,719.70

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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.