Home / 28,688.40-39,558.06-19,615.23

Finding the Fourth Proportional to 28,688.40, 39,558.06 and 19,615.23

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Solution

The fourth proportional to 28,688.40, 39,558.06 and 19,615.23 is: 27,047.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.40 : 39,558.06 = 19,615.23 : x
  2. Step 2: Convert to fraction form
    28,688.40/39,558.06 = 19,615.23/x
  3. Step 3: Cross multiply
    28,688.40x = 39,558.06 × 19,615.23
  4. Step 4: Simplify right side
    28,688.40x = 775,940,445.25
  5. Step 5: Solve for x
    x = 775,940,445.25/28,688.40
  6. Step 6: Final answer
    x = 27,047.18

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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.