Home / 28,049.32-38,710.74-20,963.40

Finding the Fourth Proportional to 28,049.32, 38,710.74 and 20,963.40

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Solution

The fourth proportional to 28,049.32, 38,710.74 and 20,963.40 is: 28,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,049.32 : 38,710.74 = 20,963.40 : x
  2. Step 2: Convert to fraction form
    28,049.32/38,710.74 = 20,963.40/x
  3. Step 3: Cross multiply
    28,049.32x = 38,710.74 × 20,963.40
  4. Step 4: Simplify right side
    28,049.32x = 811,508,726.92
  5. Step 5: Solve for x
    x = 811,508,726.92/28,049.32
  6. Step 6: Final answer
    x = 28,931.49

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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.