Home / 30,270.15-45,405.23-18,460.35

Finding the Fourth Proportional to 30,270.15, 45,405.23 and 18,460.35

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Solution

The fourth proportional to 30,270.15, 45,405.23 and 18,460.35 is: 27,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,270.15 : 45,405.23 = 18,460.35 : x
  2. Step 2: Convert to fraction form
    30,270.15/45,405.23 = 18,460.35/x
  3. Step 3: Cross multiply
    30,270.15x = 45,405.23 × 18,460.35
  4. Step 4: Simplify right side
    30,270.15x = 838,196,345.33
  5. Step 5: Solve for x
    x = 838,196,345.33/30,270.15
  6. Step 6: Final answer
    x = 27,690.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.