Home / 28,722,242.36-39,636,823.02-15,669,461.72

Finding the Fourth Proportional to 28,722,242.36, 39,636,823.02 and 15,669,461.72

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Solution

The fourth proportional to 28,722,242.36, 39,636,823.02 and 15,669,461.72 is: 21,623,927.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722,242.36 : 39,636,823.02 = 15,669,461.72 : x
  2. Step 2: Convert to fraction form
    28,722,242.36/39,636,823.02 = 15,669,461.72/x
  3. Step 3: Cross multiply
    28,722,242.36x = 39,636,823.02 × 15,669,461.72
  4. Step 4: Simplify right side
    28,722,242.36x = 621,087,681,014,304.88
  5. Step 5: Solve for x
    x = 621,087,681,014,304.88/28,722,242.36
  6. Step 6: Final answer
    x = 21,623,927.31

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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.