Home / 20,746.84-30,991.88-18,663.52

Finding the Fourth Proportional to 20,746.84, 30,991.88 and 18,663.52

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Solution

The fourth proportional to 20,746.84, 30,991.88 and 18,663.52 is: 27,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.84 : 30,991.88 = 18,663.52 : x
  2. Step 2: Convert to fraction form
    20,746.84/30,991.88 = 18,663.52/x
  3. Step 3: Cross multiply
    20,746.84x = 30,991.88 × 18,663.52
  4. Step 4: Simplify right side
    20,746.84x = 578,417,572.22
  5. Step 5: Solve for x
    x = 578,417,572.22/20,746.84
  6. Step 6: Final answer
    x = 27,879.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.