Home / 30,970.13-42,738.08-18,048.60

Finding the Fourth Proportional to 30,970.13, 42,738.08 and 18,048.60

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Solution

The fourth proportional to 30,970.13, 42,738.08 and 18,048.60 is: 24,906.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.13 : 42,738.08 = 18,048.60 : x
  2. Step 2: Convert to fraction form
    30,970.13/42,738.08 = 18,048.60/x
  3. Step 3: Cross multiply
    30,970.13x = 42,738.08 × 18,048.60
  4. Step 4: Simplify right side
    30,970.13x = 771,362,420.45
  5. Step 5: Solve for x
    x = 771,362,420.45/30,970.13
  6. Step 6: Final answer
    x = 24,906.66

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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.