Home / 21,030-29,021.40-11,598.48

Finding the Fourth Proportional to 21,030, 29,021.40 and 11,598.48

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Solution

The fourth proportional to 21,030, 29,021.40 and 11,598.48 is: 16,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030 : 29,021.40 = 11,598.48 : x
  2. Step 2: Convert to fraction form
    21,030/29,021.40 = 11,598.48/x
  3. Step 3: Cross multiply
    21,030x = 29,021.40 × 11,598.48
  4. Step 4: Simplify right side
    21,030x = 336,604,127.47
  5. Step 5: Solve for x
    x = 336,604,127.47/21,030
  6. Step 6: Final answer
    x = 16,005.90

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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.