Home / 31,784.04-47,681.56-13,074.36

Finding the Fourth Proportional to 31,784.04, 47,681.56 and 13,074.36

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Solution

The fourth proportional to 31,784.04, 47,681.56 and 13,074.36 is: 19,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,784.04 : 47,681.56 = 13,074.36 : x
  2. Step 2: Convert to fraction form
    31,784.04/47,681.56 = 13,074.36/x
  3. Step 3: Cross multiply
    31,784.04x = 47,681.56 × 13,074.36
  4. Step 4: Simplify right side
    31,784.04x = 623,405,880.80
  5. Step 5: Solve for x
    x = 623,405,880.80/31,784.04
  6. Step 6: Final answer
    x = 19,613.80

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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.