Home / 30,440.74-42,010.38-18,501.76

Finding the Fourth Proportional to 30,440.74, 42,010.38 and 18,501.76

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Solution

The fourth proportional to 30,440.74, 42,010.38 and 18,501.76 is: 25,533.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.74 : 42,010.38 = 18,501.76 : x
  2. Step 2: Convert to fraction form
    30,440.74/42,010.38 = 18,501.76/x
  3. Step 3: Cross multiply
    30,440.74x = 42,010.38 × 18,501.76
  4. Step 4: Simplify right side
    30,440.74x = 777,265,968.27
  5. Step 5: Solve for x
    x = 777,265,968.27/30,440.74
  6. Step 6: Final answer
    x = 25,533.74

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Double scale
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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.