Home / 28,908,469.89-39,893,746.05-15,855,836.13

Finding the Fourth Proportional to 28,908,469.89, 39,893,746.05 and 15,855,836.13

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Solution

The fourth proportional to 28,908,469.89, 39,893,746.05 and 15,855,836.13 is: 21,881,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,908,469.89 : 39,893,746.05 = 15,855,836.13 : x
  2. Step 2: Convert to fraction form
    28,908,469.89/39,893,746.05 = 15,855,836.13/x
  3. Step 3: Cross multiply
    28,908,469.89x = 39,893,746.05 × 15,855,836.13
  4. Step 4: Simplify right side
    28,908,469.89x = 632,548,699,980,634.75
  5. Step 5: Solve for x
    x = 632,548,699,980,634.75/28,908,469.89
  6. Step 6: Final answer
    x = 21,881,085.45

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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.