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Finding the Fourth Proportional to 31,888.72, 47,835.06 and 9,703.72

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Solution

The fourth proportional to 31,888.72, 47,835.06 and 9,703.72 is: 14,556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,888.72 : 47,835.06 = 9,703.72 : x
  2. Step 2: Convert to fraction form
    31,888.72/47,835.06 = 9,703.72/x
  3. Step 3: Cross multiply
    31,888.72x = 47,835.06 × 9,703.72
  4. Step 4: Simplify right side
    31,888.72x = 464,178,028.42
  5. Step 5: Solve for x
    x = 464,178,028.42/31,888.72
  6. Step 6: Final answer
    x = 14,556.18

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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.