Home / 30,569.76-45,815.76-13,938.84

Finding the Fourth Proportional to 30,569.76, 45,815.76 and 13,938.84

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Solution

The fourth proportional to 30,569.76, 45,815.76 and 13,938.84 is: 20,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,569.76 : 45,815.76 = 13,938.84 : x
  2. Step 2: Convert to fraction form
    30,569.76/45,815.76 = 13,938.84/x
  3. Step 3: Cross multiply
    30,569.76x = 45,815.76 × 13,938.84
  4. Step 4: Simplify right side
    30,569.76x = 638,618,548.12
  5. Step 5: Solve for x
    x = 638,618,548.12/30,569.76
  6. Step 6: Final answer
    x = 20,890.53

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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.