Home / 30,429.54-41,980.28-18,490.95

Finding the Fourth Proportional to 30,429.54, 41,980.28 and 18,490.95

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Solution

The fourth proportional to 30,429.54, 41,980.28 and 18,490.95 is: 25,509.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.54 : 41,980.28 = 18,490.95 : x
  2. Step 2: Convert to fraction form
    30,429.54/41,980.28 = 18,490.95/x
  3. Step 3: Cross multiply
    30,429.54x = 41,980.28 × 18,490.95
  4. Step 4: Simplify right side
    30,429.54x = 776,255,166.01
  5. Step 5: Solve for x
    x = 776,255,166.01/30,429.54
  6. Step 6: Final answer
    x = 25,509.92

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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.