Home / 30,436.74-42,004.86-18,497.76

Finding the Fourth Proportional to 30,436.74, 42,004.86 and 18,497.76

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Solution

The fourth proportional to 30,436.74, 42,004.86 and 18,497.76 is: 25,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,436.74 : 42,004.86 = 18,497.76 : x
  2. Step 2: Convert to fraction form
    30,436.74/42,004.86 = 18,497.76/x
  3. Step 3: Cross multiply
    30,436.74x = 42,004.86 × 18,497.76
  4. Step 4: Simplify right side
    30,436.74x = 776,995,819.11
  5. Step 5: Solve for x
    x = 776,995,819.11/30,436.74
  6. Step 6: Final answer
    x = 25,528.22

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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.