Home / 20,444.99-28,214.33-12,378.51

Finding the Fourth Proportional to 20,444.99, 28,214.33 and 12,378.51

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Solution

The fourth proportional to 20,444.99, 28,214.33 and 12,378.51 is: 17,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,444.99 : 28,214.33 = 12,378.51 : x
  2. Step 2: Convert to fraction form
    20,444.99/28,214.33 = 12,378.51/x
  3. Step 3: Cross multiply
    20,444.99x = 28,214.33 × 12,378.51
  4. Step 4: Simplify right side
    20,444.99x = 349,251,304.16
  5. Step 5: Solve for x
    x = 349,251,304.16/20,444.99
  6. Step 6: Final answer
    x = 17,082.49

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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.