Home / 31,528.40-43,509.53-17,381.75

Finding the Fourth Proportional to 31,528.40, 43,509.53 and 17,381.75

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Solution

The fourth proportional to 31,528.40, 43,509.53 and 17,381.75 is: 23,987.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,528.40 : 43,509.53 = 17,381.75 : x
  2. Step 2: Convert to fraction form
    31,528.40/43,509.53 = 17,381.75/x
  3. Step 3: Cross multiply
    31,528.40x = 43,509.53 × 17,381.75
  4. Step 4: Simplify right side
    31,528.40x = 756,271,664.37
  5. Step 5: Solve for x
    x = 756,271,664.37/31,528.40
  6. Step 6: Final answer
    x = 23,987.00

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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.