Home / 30,328.21-45,501.11-12,555.59

Finding the Fourth Proportional to 30,328.21, 45,501.11 and 12,555.59

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Solution

The fourth proportional to 30,328.21, 45,501.11 and 12,555.59 is: 18,837.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328.21 : 45,501.11 = 12,555.59 : x
  2. Step 2: Convert to fraction form
    30,328.21/45,501.11 = 12,555.59/x
  3. Step 3: Cross multiply
    30,328.21x = 45,501.11 × 12,555.59
  4. Step 4: Simplify right side
    30,328.21x = 571,293,281.70
  5. Step 5: Solve for x
    x = 571,293,281.70/30,328.21
  6. Step 6: Final answer
    x = 18,837.03

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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.