Home / 27,979.56-38,533.52-23,220

Finding the Fourth Proportional to 27,979.56, 38,533.52 and 23,220

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Solution

The fourth proportional to 27,979.56, 38,533.52 and 23,220 is: 31,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.56 : 38,533.52 = 23,220 : x
  2. Step 2: Convert to fraction form
    27,979.56/38,533.52 = 23,220/x
  3. Step 3: Cross multiply
    27,979.56x = 38,533.52 × 23,220
  4. Step 4: Simplify right side
    27,979.56x = 894,748,392.45
  5. Step 5: Solve for x
    x = 894,748,392.45/27,979.56
  6. Step 6: Final answer
    x = 31,978.64

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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.