Home / 28,032.06-38,686.95-20,946.18

Finding the Fourth Proportional to 28,032.06, 38,686.95 and 20,946.18

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Solution

The fourth proportional to 28,032.06, 38,686.95 and 20,946.18 is: 28,907.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,032.06 : 38,686.95 = 20,946.18 : x
  2. Step 2: Convert to fraction form
    28,032.06/38,686.95 = 20,946.18/x
  3. Step 3: Cross multiply
    28,032.06x = 38,686.95 × 20,946.18
  4. Step 4: Simplify right side
    28,032.06x = 810,343,818.35
  5. Step 5: Solve for x
    x = 810,343,818.35/28,032.06
  6. Step 6: Final answer
    x = 28,907.75

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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.