Home / 27,840.83-38,421.08-15,740.34

Finding the Fourth Proportional to 27,840.83, 38,421.08 and 15,740.34

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Solution

The fourth proportional to 27,840.83, 38,421.08 and 15,740.34 is: 21,722.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.83 : 38,421.08 = 15,740.34 : x
  2. Step 2: Convert to fraction form
    27,840.83/38,421.08 = 15,740.34/x
  3. Step 3: Cross multiply
    27,840.83x = 38,421.08 × 15,740.34
  4. Step 4: Simplify right side
    27,840.83x = 604,761,003.27
  5. Step 5: Solve for x
    x = 604,761,003.27/27,840.83
  6. Step 6: Final answer
    x = 21,722.09

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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.