Home / 30,018.48-45,018.81-8,960.10

Finding the Fourth Proportional to 30,018.48, 45,018.81 and 8,960.10

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Solution

The fourth proportional to 30,018.48, 45,018.81 and 8,960.10 is: 13,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,018.48 : 45,018.81 = 8,960.10 : x
  2. Step 2: Convert to fraction form
    30,018.48/45,018.81 = 8,960.10/x
  3. Step 3: Cross multiply
    30,018.48x = 45,018.81 × 8,960.10
  4. Step 4: Simplify right side
    30,018.48x = 403,373,039.48
  5. Step 5: Solve for x
    x = 403,373,039.48/30,018.48
  6. Step 6: Final answer
    x = 13,437.49

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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.