Home / 30,024.21-45,036.23-21,102.81

Finding the Fourth Proportional to 30,024.21, 45,036.23 and 21,102.81

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Solution

The fourth proportional to 30,024.21, 45,036.23 and 21,102.81 is: 31,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,024.21 : 45,036.23 = 21,102.81 : x
  2. Step 2: Convert to fraction form
    30,024.21/45,036.23 = 21,102.81/x
  3. Step 3: Cross multiply
    30,024.21x = 45,036.23 × 21,102.81
  4. Step 4: Simplify right side
    30,024.21x = 950,390,899.29
  5. Step 5: Solve for x
    x = 950,390,899.29/30,024.21
  6. Step 6: Final answer
    x = 31,654.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.