Home / 27,784.64-38,343.06-15,209.66

Finding the Fourth Proportional to 27,784.64, 38,343.06 and 15,209.66

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Solution

The fourth proportional to 27,784.64, 38,343.06 and 15,209.66 is: 20,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,784.64 : 38,343.06 = 15,209.66 : x
  2. Step 2: Convert to fraction form
    27,784.64/38,343.06 = 15,209.66/x
  3. Step 3: Cross multiply
    27,784.64x = 38,343.06 × 15,209.66
  4. Step 4: Simplify right side
    27,784.64x = 583,184,905.96
  5. Step 5: Solve for x
    x = 583,184,905.96/27,784.64
  6. Step 6: Final answer
    x = 20,989.47

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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.