Home / 30,579.76-45,830.76-13,948.84

Finding the Fourth Proportional to 30,579.76, 45,830.76 and 13,948.84

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Solution

The fourth proportional to 30,579.76, 45,830.76 and 13,948.84 is: 20,905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.76 : 45,830.76 = 13,948.84 : x
  2. Step 2: Convert to fraction form
    30,579.76/45,830.76 = 13,948.84/x
  3. Step 3: Cross multiply
    30,579.76x = 45,830.76 × 13,948.84
  4. Step 4: Simplify right side
    30,579.76x = 639,285,938.32
  5. Step 5: Solve for x
    x = 639,285,938.32/30,579.76
  6. Step 6: Final answer
    x = 20,905.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.