Home / 31,405.60-47,108.42-11,681.60

Finding the Fourth Proportional to 31,405.60, 47,108.42 and 11,681.60

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Solution

The fourth proportional to 31,405.60, 47,108.42 and 11,681.60 is: 17,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.60 : 47,108.42 = 11,681.60 : x
  2. Step 2: Convert to fraction form
    31,405.60/47,108.42 = 11,681.60/x
  3. Step 3: Cross multiply
    31,405.60x = 47,108.42 × 11,681.60
  4. Step 4: Simplify right side
    31,405.60x = 550,301,719.07
  5. Step 5: Solve for x
    x = 550,301,719.07/31,405.60
  6. Step 6: Final answer
    x = 17,522.41

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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.