Home / 28,020,669.12-38,668,459.59-15,797,438.64

Finding the Fourth Proportional to 28,020,669.12, 38,668,459.59 and 15,797,438.64

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Solution

The fourth proportional to 28,020,669.12, 38,668,459.59 and 15,797,438.64 is: 21,800,429.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020,669.12 : 38,668,459.59 = 15,797,438.64 : x
  2. Step 2: Convert to fraction form
    28,020,669.12/38,668,459.59 = 15,797,438.64/x
  3. Step 3: Cross multiply
    28,020,669.12x = 38,668,459.59 × 15,797,438.64
  4. Step 4: Simplify right side
    28,020,669.12x = 610,862,617,676,344.62
  5. Step 5: Solve for x
    x = 610,862,617,676,344.62/28,020,669.12
  6. Step 6: Final answer
    x = 21,800,429.36

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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.