Home / 30,389.12-45,577.90-12,871.24

Finding the Fourth Proportional to 30,389.12, 45,577.90 and 12,871.24

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Solution

The fourth proportional to 30,389.12, 45,577.90 and 12,871.24 is: 19,304.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,389.12 : 45,577.90 = 12,871.24 : x
  2. Step 2: Convert to fraction form
    30,389.12/45,577.90 = 12,871.24/x
  3. Step 3: Cross multiply
    30,389.12x = 45,577.90 × 12,871.24
  4. Step 4: Simplify right side
    30,389.12x = 586,644,089.60
  5. Step 5: Solve for x
    x = 586,644,089.60/30,389.12
  6. Step 6: Final answer
    x = 19,304.41

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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.