Home / 31,386.45-43,200.63-28,395.93

Finding the Fourth Proportional to 31,386.45, 43,200.63 and 28,395.93

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Solution

The fourth proportional to 31,386.45, 43,200.63 and 28,395.93 is: 39,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.45 : 43,200.63 = 28,395.93 : x
  2. Step 2: Convert to fraction form
    31,386.45/43,200.63 = 28,395.93/x
  3. Step 3: Cross multiply
    31,386.45x = 43,200.63 × 28,395.93
  4. Step 4: Simplify right side
    31,386.45x = 1,226,722,065.44
  5. Step 5: Solve for x
    x = 1,226,722,065.44/31,386.45
  6. Step 6: Final answer
    x = 39,084.45

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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.