Home / 31,515.10-43,492.89-18,090.70

Finding the Fourth Proportional to 31,515.10, 43,492.89 and 18,090.70

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Solution

The fourth proportional to 31,515.10, 43,492.89 and 18,090.70 is: 24,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.10 : 43,492.89 = 18,090.70 : x
  2. Step 2: Convert to fraction form
    31,515.10/43,492.89 = 18,090.70/x
  3. Step 3: Cross multiply
    31,515.10x = 43,492.89 × 18,090.70
  4. Step 4: Simplify right side
    31,515.10x = 786,816,825.12
  5. Step 5: Solve for x
    x = 786,816,825.12/31,515.10
  6. Step 6: Final answer
    x = 24,966.34

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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.