Home / 28,731,228.71-39,649,932.95-15,679,328.32

Finding the Fourth Proportional to 28,731,228.71, 39,649,932.95 and 15,679,328.32

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Solution

The fourth proportional to 28,731,228.71, 39,649,932.95 and 15,679,328.32 is: 21,637,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,228.71 : 39,649,932.95 = 15,679,328.32 : x
  2. Step 2: Convert to fraction form
    28,731,228.71/39,649,932.95 = 15,679,328.32/x
  3. Step 3: Cross multiply
    28,731,228.71x = 39,649,932.95 × 15,679,328.32
  4. Step 4: Simplify right side
    28,731,228.71x = 621,684,316,589,036.25
  5. Step 5: Solve for x
    x = 621,684,316,589,036.25/28,731,228.71
  6. Step 6: Final answer
    x = 21,637,930.03

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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.