Home / 31,700.16-43,747.70-18,271.17

Finding the Fourth Proportional to 31,700.16, 43,747.70 and 18,271.17

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Solution

The fourth proportional to 31,700.16, 43,747.70 and 18,271.17 is: 25,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,700.16 : 43,747.70 = 18,271.17 : x
  2. Step 2: Convert to fraction form
    31,700.16/43,747.70 = 18,271.17/x
  3. Step 3: Cross multiply
    31,700.16x = 43,747.70 × 18,271.17
  4. Step 4: Simplify right side
    31,700.16x = 799,321,572.45
  5. Step 5: Solve for x
    x = 799,321,572.45/31,700.16
  6. Step 6: Final answer
    x = 25,215.06

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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.