Home / 21,323.09-31,987.13-8,841.54

Finding the Fourth Proportional to 21,323.09, 31,987.13 and 8,841.54

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Solution

The fourth proportional to 21,323.09, 31,987.13 and 8,841.54 is: 13,263.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.09 : 31,987.13 = 8,841.54 : x
  2. Step 2: Convert to fraction form
    21,323.09/31,987.13 = 8,841.54/x
  3. Step 3: Cross multiply
    21,323.09x = 31,987.13 × 8,841.54
  4. Step 4: Simplify right side
    21,323.09x = 282,815,445.17
  5. Step 5: Solve for x
    x = 282,815,445.17/21,323.09
  6. Step 6: Final answer
    x = 13,263.35

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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.