Home / 21,014,143.35-31,521,215.03-7,382,681.70

Finding the Fourth Proportional to 21,014,143.35, 31,521,215.03 and 7,382,681.70

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Solution

The fourth proportional to 21,014,143.35, 31,521,215.03 and 7,382,681.70 is: 11,074,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014,143.35 : 31,521,215.03 = 7,382,681.70 : x
  2. Step 2: Convert to fraction form
    21,014,143.35/31,521,215.03 = 7,382,681.70/x
  3. Step 3: Cross multiply
    21,014,143.35x = 31,521,215.03 × 7,382,681.70
  4. Step 4: Simplify right side
    21,014,143.35x = 232,711,097,326,832.53
  5. Step 5: Solve for x
    x = 232,711,097,326,832.53/21,014,143.35
  6. Step 6: Final answer
    x = 11,074,022.55

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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.