Home / 31,615.08-47,429.40-9,430.20

Finding the Fourth Proportional to 31,615.08, 47,429.40 and 9,430.20

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Solution

The fourth proportional to 31,615.08, 47,429.40 and 9,430.20 is: 14,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,615.08 : 47,429.40 = 9,430.20 : x
  2. Step 2: Convert to fraction form
    31,615.08/47,429.40 = 9,430.20/x
  3. Step 3: Cross multiply
    31,615.08x = 47,429.40 × 9,430.20
  4. Step 4: Simplify right side
    31,615.08x = 447,268,727.88
  5. Step 5: Solve for x
    x = 447,268,727.88/31,615.08
  6. Step 6: Final answer
    x = 14,147.32

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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.