Home / 21,658,788.65-29,888,271.91-12,951,773.03

Finding the Fourth Proportional to 21,658,788.65, 29,888,271.91 and 12,951,773.03

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Solution

The fourth proportional to 21,658,788.65, 29,888,271.91 and 12,951,773.03 is: 17,872,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658,788.65 : 29,888,271.91 = 12,951,773.03 : x
  2. Step 2: Convert to fraction form
    21,658,788.65/29,888,271.91 = 12,951,773.03/x
  3. Step 3: Cross multiply
    21,658,788.65x = 29,888,271.91 × 12,951,773.03
  4. Step 4: Simplify right side
    21,658,788.65x = 387,106,114,128,155
  5. Step 5: Solve for x
    x = 387,106,114,128,155/21,658,788.65
  6. Step 6: Final answer
    x = 17,872,934.65

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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.