Home / 30,440.49-42,009.48-18,501.90

Finding the Fourth Proportional to 30,440.49, 42,009.48 and 18,501.90

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Solution

The fourth proportional to 30,440.49, 42,009.48 and 18,501.90 is: 25,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.49 : 42,009.48 = 18,501.90 : x
  2. Step 2: Convert to fraction form
    30,440.49/42,009.48 = 18,501.90/x
  3. Step 3: Cross multiply
    30,440.49x = 42,009.48 × 18,501.90
  4. Step 4: Simplify right side
    30,440.49x = 777,255,198.01
  5. Step 5: Solve for x
    x = 777,255,198.01/30,440.49
  6. Step 6: Final answer
    x = 25,533.60

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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.