Home / 28,443,165.36-39,251,273.76-15,390,136.32

Finding the Fourth Proportional to 28,443,165.36, 39,251,273.76 and 15,390,136.32

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Solution

The fourth proportional to 28,443,165.36, 39,251,273.76 and 15,390,136.32 is: 21,238,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443,165.36 : 39,251,273.76 = 15,390,136.32 : x
  2. Step 2: Convert to fraction form
    28,443,165.36/39,251,273.76 = 15,390,136.32/x
  3. Step 3: Cross multiply
    28,443,165.36x = 39,251,273.76 × 15,390,136.32
  4. Step 4: Simplify right side
    28,443,165.36x = 604,082,453,900,039
  5. Step 5: Solve for x
    x = 604,082,453,900,039/28,443,165.36
  6. Step 6: Final answer
    x = 21,238,228.81

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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.