Home / 31,702.23-47,574.11-11,980.79

Finding the Fourth Proportional to 31,702.23, 47,574.11 and 11,980.79

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Solution

The fourth proportional to 31,702.23, 47,574.11 and 11,980.79 is: 17,979.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,702.23 : 47,574.11 = 11,980.79 : x
  2. Step 2: Convert to fraction form
    31,702.23/47,574.11 = 11,980.79/x
  3. Step 3: Cross multiply
    31,702.23x = 47,574.11 × 11,980.79
  4. Step 4: Simplify right side
    31,702.23x = 569,975,123.57
  5. Step 5: Solve for x
    x = 569,975,123.57/31,702.23
  6. Step 6: Final answer
    x = 17,979.02

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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.