Home / 21,095.54-31,620.07-9,985.58

Finding the Fourth Proportional to 21,095.54, 31,620.07 and 9,985.58

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Solution

The fourth proportional to 21,095.54, 31,620.07 and 9,985.58 is: 14,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.54 : 31,620.07 = 9,985.58 : x
  2. Step 2: Convert to fraction form
    21,095.54/31,620.07 = 9,985.58/x
  3. Step 3: Cross multiply
    21,095.54x = 31,620.07 × 9,985.58
  4. Step 4: Simplify right side
    21,095.54x = 315,744,711.55
  5. Step 5: Solve for x
    x = 315,744,711.55/21,095.54
  6. Step 6: Final answer
    x = 14,967.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.