Home / 30,011.36-45,009.12-8,945.72

Finding the Fourth Proportional to 30,011.36, 45,009.12 and 8,945.72

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Solution

The fourth proportional to 30,011.36, 45,009.12 and 8,945.72 is: 13,416.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,011.36 : 45,009.12 = 8,945.72 : x
  2. Step 2: Convert to fraction form
    30,011.36/45,009.12 = 8,945.72/x
  3. Step 3: Cross multiply
    30,011.36x = 45,009.12 × 8,945.72
  4. Step 4: Simplify right side
    30,011.36x = 402,638,984.97
  5. Step 5: Solve for x
    x = 402,638,984.97/30,011.36
  6. Step 6: Final answer
    x = 13,416.22

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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.