Home / 28,555.56-39,386.34-17,378.28

Finding the Fourth Proportional to 28,555.56, 39,386.34 and 17,378.28

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Solution

The fourth proportional to 28,555.56, 39,386.34 and 17,378.28 is: 23,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.56 : 39,386.34 = 17,378.28 : x
  2. Step 2: Convert to fraction form
    28,555.56/39,386.34 = 17,378.28/x
  3. Step 3: Cross multiply
    28,555.56x = 39,386.34 × 17,378.28
  4. Step 4: Simplify right side
    28,555.56x = 684,466,844.70
  5. Step 5: Solve for x
    x = 684,466,844.70/28,555.56
  6. Step 6: Final answer
    x = 23,969.65

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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.