Home / 28,979,494.04-39,992,660.85-15,927,215.60

Finding the Fourth Proportional to 28,979,494.04, 39,992,660.85 and 15,927,215.60

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Solution

The fourth proportional to 28,979,494.04, 39,992,660.85 and 15,927,215.60 is: 21,980,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,494.04 : 39,992,660.85 = 15,927,215.60 : x
  2. Step 2: Convert to fraction form
    28,979,494.04/39,992,660.85 = 15,927,215.60/x
  3. Step 3: Cross multiply
    28,979,494.04x = 39,992,660.85 × 15,927,215.60
  4. Step 4: Simplify right side
    28,979,494.04x = 636,971,731,575,666
  5. Step 5: Solve for x
    x = 636,971,731,575,666/28,979,494.04
  6. Step 6: Final answer
    x = 21,980,084.64

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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.