Home / 20,328.59-28,054.80-11,376.95

Finding the Fourth Proportional to 20,328.59, 28,054.80 and 11,376.95

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Solution

The fourth proportional to 20,328.59, 28,054.80 and 11,376.95 is: 15,700.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.59 : 28,054.80 = 11,376.95 : x
  2. Step 2: Convert to fraction form
    20,328.59/28,054.80 = 11,376.95/x
  3. Step 3: Cross multiply
    20,328.59x = 28,054.80 × 11,376.95
  4. Step 4: Simplify right side
    20,328.59x = 319,177,916.59
  5. Step 5: Solve for x
    x = 319,177,916.59/20,328.59
  6. Step 6: Final answer
    x = 15,700.94

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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.