Home / 13,420.17-20,130.30-4,655.10

Finding the Fourth Proportional to 13,420.17, 20,130.30 and 4,655.10

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Solution

The fourth proportional to 13,420.17, 20,130.30 and 4,655.10 is: 6,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.17 : 20,130.30 = 4,655.10 : x
  2. Step 2: Convert to fraction form
    13,420.17/20,130.30 = 4,655.10/x
  3. Step 3: Cross multiply
    13,420.17x = 20,130.30 × 4,655.10
  4. Step 4: Simplify right side
    13,420.17x = 93,708,559.53
  5. Step 5: Solve for x
    x = 93,708,559.53/13,420.17
  6. Step 6: Final answer
    x = 6,982.67

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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.