Home / 13,421.49-20,132.45-4,656.69

Finding the Fourth Proportional to 13,421.49, 20,132.45 and 4,656.69

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Solution

The fourth proportional to 13,421.49, 20,132.45 and 4,656.69 is: 6,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.49 : 20,132.45 = 4,656.69 : x
  2. Step 2: Convert to fraction form
    13,421.49/20,132.45 = 4,656.69/x
  3. Step 3: Cross multiply
    13,421.49x = 20,132.45 × 4,656.69
  4. Step 4: Simplify right side
    13,421.49x = 93,750,555.31
  5. Step 5: Solve for x
    x = 93,750,555.31/13,421.49
  6. Step 6: Final answer
    x = 6,985.11

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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.