Home / 20,706.95-28,574.70-11,275.58

Finding the Fourth Proportional to 20,706.95, 28,574.70 and 11,275.58

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Solution

The fourth proportional to 20,706.95, 28,574.70 and 11,275.58 is: 15,559.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.95 : 28,574.70 = 11,275.58 : x
  2. Step 2: Convert to fraction form
    20,706.95/28,574.70 = 11,275.58/x
  3. Step 3: Cross multiply
    20,706.95x = 28,574.70 × 11,275.58
  4. Step 4: Simplify right side
    20,706.95x = 322,196,315.83
  5. Step 5: Solve for x
    x = 322,196,315.83/20,706.95
  6. Step 6: Final answer
    x = 15,559.82

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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.