Home / 21,014.52-28,999.95-11,583.08

Finding the Fourth Proportional to 21,014.52, 28,999.95 and 11,583.08

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Solution

The fourth proportional to 21,014.52, 28,999.95 and 11,583.08 is: 15,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.52 : 28,999.95 = 11,583.08 : x
  2. Step 2: Convert to fraction form
    21,014.52/28,999.95 = 11,583.08/x
  3. Step 3: Cross multiply
    21,014.52x = 28,999.95 × 11,583.08
  4. Step 4: Simplify right side
    21,014.52x = 335,908,740.85
  5. Step 5: Solve for x
    x = 335,908,740.85/21,014.52
  6. Step 6: Final answer
    x = 15,984.60

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1.5x scale

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.