Home / 31,510.16-47,269.56-13,979.60

Finding the Fourth Proportional to 31,510.16, 47,269.56 and 13,979.60

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Solution

The fourth proportional to 31,510.16, 47,269.56 and 13,979.60 is: 20,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,510.16 : 47,269.56 = 13,979.60 : x
  2. Step 2: Convert to fraction form
    31,510.16/47,269.56 = 13,979.60/x
  3. Step 3: Cross multiply
    31,510.16x = 47,269.56 × 13,979.60
  4. Step 4: Simplify right side
    31,510.16x = 660,809,540.98
  5. Step 5: Solve for x
    x = 660,809,540.98/31,510.16
  6. Step 6: Final answer
    x = 20,971.32

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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.