Home / 20,389.08-28,134.90-12,433.26

Finding the Fourth Proportional to 20,389.08, 28,134.90 and 12,433.26

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Solution

The fourth proportional to 20,389.08, 28,134.90 and 12,433.26 is: 17,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.08 : 28,134.90 = 12,433.26 : x
  2. Step 2: Convert to fraction form
    20,389.08/28,134.90 = 12,433.26/x
  3. Step 3: Cross multiply
    20,389.08x = 28,134.90 × 12,433.26
  4. Step 4: Simplify right side
    20,389.08x = 349,808,526.77
  5. Step 5: Solve for x
    x = 349,808,526.77/20,389.08
  6. Step 6: Final answer
    x = 17,156.66

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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.