Home / 28,918,897.35-39,908,485.53-15,865,919.07

Finding the Fourth Proportional to 28,918,897.35, 39,908,485.53 and 15,865,919.07

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Solution

The fourth proportional to 28,918,897.35, 39,908,485.53 and 15,865,919.07 is: 21,895,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918,897.35 : 39,908,485.53 = 15,865,919.07 : x
  2. Step 2: Convert to fraction form
    28,918,897.35/39,908,485.53 = 15,865,919.07/x
  3. Step 3: Cross multiply
    28,918,897.35x = 39,908,485.53 × 15,865,919.07
  4. Step 4: Simplify right side
    28,918,897.35x = 633,184,801,625,246.12
  5. Step 5: Solve for x
    x = 633,184,801,625,246.12/28,918,897.35
  6. Step 6: Final answer
    x = 21,895,191.71

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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.