Home / 28,540,146.88-39,385,509.76-15,487,408.49

Finding the Fourth Proportional to 28,540,146.88, 39,385,509.76 and 15,487,408.49

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Solution

The fourth proportional to 28,540,146.88, 39,385,509.76 and 15,487,408.49 is: 21,372,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540,146.88 : 39,385,509.76 = 15,487,408.49 : x
  2. Step 2: Convert to fraction form
    28,540,146.88/39,385,509.76 = 15,487,408.49/x
  3. Step 3: Cross multiply
    28,540,146.88x = 39,385,509.76 × 15,487,408.49
  4. Step 4: Simplify right side
    28,540,146.88x = 609,979,478,240,001.88
  5. Step 5: Solve for x
    x = 609,979,478,240,001.88/28,540,146.88
  6. Step 6: Final answer
    x = 21,372,681.82

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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.