Home / 30,421.80-45,632.70-9,645.30

Finding the Fourth Proportional to 30,421.80, 45,632.70 and 9,645.30

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Solution

The fourth proportional to 30,421.80, 45,632.70 and 9,645.30 is: 14,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.80 : 45,632.70 = 9,645.30 : x
  2. Step 2: Convert to fraction form
    30,421.80/45,632.70 = 9,645.30/x
  3. Step 3: Cross multiply
    30,421.80x = 45,632.70 × 9,645.30
  4. Step 4: Simplify right side
    30,421.80x = 440,141,081.31
  5. Step 5: Solve for x
    x = 440,141,081.31/30,421.80
  6. Step 6: Final answer
    x = 14,467.95

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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.