Home / 13,420.71-20,130.46-4,656.31

Finding the Fourth Proportional to 13,420.71, 20,130.46 and 4,656.31

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Solution

The fourth proportional to 13,420.71, 20,130.46 and 4,656.31 is: 6,984.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.71 : 20,130.46 = 4,656.31 : x
  2. Step 2: Convert to fraction form
    13,420.71/20,130.46 = 4,656.31/x
  3. Step 3: Cross multiply
    13,420.71x = 20,130.46 × 4,656.31
  4. Step 4: Simplify right side
    13,420.71x = 93,733,600.24
  5. Step 5: Solve for x
    x = 93,733,600.24/13,420.71
  6. Step 6: Final answer
    x = 6,984.25

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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.