Home / 27,557.34-38,085.12-20,840.82

Finding the Fourth Proportional to 27,557.34, 38,085.12 and 20,840.82

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Solution

The fourth proportional to 27,557.34, 38,085.12 and 20,840.82 is: 28,802.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,557.34 : 38,085.12 = 20,840.82 : x
  2. Step 2: Convert to fraction form
    27,557.34/38,085.12 = 20,840.82/x
  3. Step 3: Cross multiply
    27,557.34x = 38,085.12 × 20,840.82
  4. Step 4: Simplify right side
    27,557.34x = 793,725,130.60
  5. Step 5: Solve for x
    x = 793,725,130.60/27,557.34
  6. Step 6: Final answer
    x = 28,802.68

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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.