Home / 28,710.63-39,628.47-18,638.52

Finding the Fourth Proportional to 28,710.63, 39,628.47 and 18,638.52

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Solution

The fourth proportional to 28,710.63, 39,628.47 and 18,638.52 is: 25,726.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,710.63 : 39,628.47 = 18,638.52 : x
  2. Step 2: Convert to fraction form
    28,710.63/39,628.47 = 18,638.52/x
  3. Step 3: Cross multiply
    28,710.63x = 39,628.47 × 18,638.52
  4. Step 4: Simplify right side
    28,710.63x = 738,616,030.66
  5. Step 5: Solve for x
    x = 738,616,030.66/28,710.63
  6. Step 6: Final answer
    x = 25,726.22

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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.