Home / 31,352.76-47,030.58-7,979.40

Finding the Fourth Proportional to 31,352.76, 47,030.58 and 7,979.40

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Solution

The fourth proportional to 31,352.76, 47,030.58 and 7,979.40 is: 11,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,352.76 : 47,030.58 = 7,979.40 : x
  2. Step 2: Convert to fraction form
    31,352.76/47,030.58 = 7,979.40/x
  3. Step 3: Cross multiply
    31,352.76x = 47,030.58 × 7,979.40
  4. Step 4: Simplify right side
    31,352.76x = 375,275,810.05
  5. Step 5: Solve for x
    x = 375,275,810.05/31,352.76
  6. Step 6: Final answer
    x = 11,969.47

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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.