Home / 21,030.51-29,060.60-20,005.46

Finding the Fourth Proportional to 21,030.51, 29,060.60 and 20,005.46

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Solution

The fourth proportional to 21,030.51, 29,060.60 and 20,005.46 is: 27,644.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.51 : 29,060.60 = 20,005.46 : x
  2. Step 2: Convert to fraction form
    21,030.51/29,060.60 = 20,005.46/x
  3. Step 3: Cross multiply
    21,030.51x = 29,060.60 × 20,005.46
  4. Step 4: Simplify right side
    21,030.51x = 581,370,425.55
  5. Step 5: Solve for x
    x = 581,370,425.55/21,030.51
  6. Step 6: Final answer
    x = 27,644.14

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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.