Home / 30,431.02-45,653-12,900.46

Finding the Fourth Proportional to 30,431.02, 45,653 and 12,900.46

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Solution

The fourth proportional to 30,431.02, 45,653 and 12,900.46 is: 19,353.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,431.02 : 45,653 = 12,900.46 : x
  2. Step 2: Convert to fraction form
    30,431.02/45,653 = 12,900.46/x
  3. Step 3: Cross multiply
    30,431.02x = 45,653 × 12,900.46
  4. Step 4: Simplify right side
    30,431.02x = 588,944,700.38
  5. Step 5: Solve for x
    x = 588,944,700.38/30,431.02
  6. Step 6: Final answer
    x = 19,353.43

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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.