Home / 30,345.55-45,523.80-9,285.20

Finding the Fourth Proportional to 30,345.55, 45,523.80 and 9,285.20

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Solution

The fourth proportional to 30,345.55, 45,523.80 and 9,285.20 is: 13,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.55 : 45,523.80 = 9,285.20 : x
  2. Step 2: Convert to fraction form
    30,345.55/45,523.80 = 9,285.20/x
  3. Step 3: Cross multiply
    30,345.55x = 45,523.80 × 9,285.20
  4. Step 4: Simplify right side
    30,345.55x = 422,697,325.32
  5. Step 5: Solve for x
    x = 422,697,325.32/30,345.55
  6. Step 6: Final answer
    x = 13,929.47

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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.