Home / 31,681.34-47,538.22-21,158.54

Finding the Fourth Proportional to 31,681.34, 47,538.22 and 21,158.54

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Solution

The fourth proportional to 31,681.34, 47,538.22 and 21,158.54 is: 31,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.34 : 47,538.22 = 21,158.54 : x
  2. Step 2: Convert to fraction form
    31,681.34/47,538.22 = 21,158.54/x
  3. Step 3: Cross multiply
    31,681.34x = 47,538.22 × 21,158.54
  4. Step 4: Simplify right side
    31,681.34x = 1,005,839,329.40
  5. Step 5: Solve for x
    x = 1,005,839,329.40/31,681.34
  6. Step 6: Final answer
    x = 31,748.64

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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.