Home / 30,621.35-42,254.88-18,526.34

Finding the Fourth Proportional to 30,621.35, 42,254.88 and 18,526.34

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Solution

The fourth proportional to 30,621.35, 42,254.88 and 18,526.34 is: 25,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.35 : 42,254.88 = 18,526.34 : x
  2. Step 2: Convert to fraction form
    30,621.35/42,254.88 = 18,526.34/x
  3. Step 3: Cross multiply
    30,621.35x = 42,254.88 × 18,526.34
  4. Step 4: Simplify right side
    30,621.35x = 782,828,273.54
  5. Step 5: Solve for x
    x = 782,828,273.54/30,621.35
  6. Step 6: Final answer
    x = 25,564.79

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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.