Home / 27,750.51-38,310.53-18,688.86

Finding the Fourth Proportional to 27,750.51, 38,310.53 and 18,688.86

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Solution

The fourth proportional to 27,750.51, 38,310.53 and 18,688.86 is: 25,800.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,750.51 : 38,310.53 = 18,688.86 : x
  2. Step 2: Convert to fraction form
    27,750.51/38,310.53 = 18,688.86/x
  3. Step 3: Cross multiply
    27,750.51x = 38,310.53 × 18,688.86
  4. Step 4: Simplify right side
    27,750.51x = 715,980,038.25
  5. Step 5: Solve for x
    x = 715,980,038.25/27,750.51
  6. Step 6: Final answer
    x = 25,800.61

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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.