Home / 30,011.52-45,018.48-11,289.60

Finding the Fourth Proportional to 30,011.52, 45,018.48 and 11,289.60

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Solution

The fourth proportional to 30,011.52, 45,018.48 and 11,289.60 is: 16,934.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,011.52 : 45,018.48 = 11,289.60 : x
  2. Step 2: Convert to fraction form
    30,011.52/45,018.48 = 11,289.60/x
  3. Step 3: Cross multiply
    30,011.52x = 45,018.48 × 11,289.60
  4. Step 4: Simplify right side
    30,011.52x = 508,240,631.81
  5. Step 5: Solve for x
    x = 508,240,631.81/30,011.52
  6. Step 6: Final answer
    x = 16,934.85

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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.