Home / 15,582.72-21,495.60-9,984

Finding the Fourth Proportional to 15,582.72, 21,495.60 and 9,984

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Solution

The fourth proportional to 15,582.72, 21,495.60 and 9,984 is: 13,772.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.72 : 21,495.60 = 9,984 : x
  2. Step 2: Convert to fraction form
    15,582.72/21,495.60 = 9,984/x
  3. Step 3: Cross multiply
    15,582.72x = 21,495.60 × 9,984
  4. Step 4: Simplify right side
    15,582.72x = 214,612,070.40
  5. Step 5: Solve for x
    x = 214,612,070.40/15,582.72
  6. Step 6: Final answer
    x = 13,772.44

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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.