Home / 15,827.01-21,840.60-9,112.89

Finding the Fourth Proportional to 15,827.01, 21,840.60 and 9,112.89

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Solution

The fourth proportional to 15,827.01, 21,840.60 and 9,112.89 is: 12,575.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,827.01 : 21,840.60 = 9,112.89 : x
  2. Step 2: Convert to fraction form
    15,827.01/21,840.60 = 9,112.89/x
  3. Step 3: Cross multiply
    15,827.01x = 21,840.60 × 9,112.89
  4. Step 4: Simplify right side
    15,827.01x = 199,030,985.33
  5. Step 5: Solve for x
    x = 199,030,985.33/15,827.01
  6. Step 6: Final answer
    x = 12,575.40

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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.