Home / 20,111.65-30,032.03-16,421.08

Finding the Fourth Proportional to 20,111.65, 30,032.03 and 16,421.08

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Solution

The fourth proportional to 20,111.65, 30,032.03 and 16,421.08 is: 24,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.65 : 30,032.03 = 16,421.08 : x
  2. Step 2: Convert to fraction form
    20,111.65/30,032.03 = 16,421.08/x
  3. Step 3: Cross multiply
    20,111.65x = 30,032.03 × 16,421.08
  4. Step 4: Simplify right side
    20,111.65x = 493,158,367.19
  5. Step 5: Solve for x
    x = 493,158,367.19/20,111.65
  6. Step 6: Final answer
    x = 24,521.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.