Home / 30,129.81-41,595.69-20,584.05

Finding the Fourth Proportional to 30,129.81, 41,595.69 and 20,584.05

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Solution

The fourth proportional to 30,129.81, 41,595.69 and 20,584.05 is: 28,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.81 : 41,595.69 = 20,584.05 : x
  2. Step 2: Convert to fraction form
    30,129.81/41,595.69 = 20,584.05/x
  3. Step 3: Cross multiply
    30,129.81x = 41,595.69 × 20,584.05
  4. Step 4: Simplify right side
    30,129.81x = 856,207,762.74
  5. Step 5: Solve for x
    x = 856,207,762.74/30,129.81
  6. Step 6: Final answer
    x = 28,417.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.