Home / 31,390.44-47,089.50-12,927.72

Finding the Fourth Proportional to 31,390.44, 47,089.50 and 12,927.72

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Solution

The fourth proportional to 31,390.44, 47,089.50 and 12,927.72 is: 19,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.44 : 47,089.50 = 12,927.72 : x
  2. Step 2: Convert to fraction form
    31,390.44/47,089.50 = 12,927.72/x
  3. Step 3: Cross multiply
    31,390.44x = 47,089.50 × 12,927.72
  4. Step 4: Simplify right side
    31,390.44x = 608,759,870.94
  5. Step 5: Solve for x
    x = 608,759,870.94/31,390.44
  6. Step 6: Final answer
    x = 19,393.16

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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.