Home / 13,421.55-20,153.39-11,368.47

Finding the Fourth Proportional to 13,421.55, 20,153.39 and 11,368.47

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Solution

The fourth proportional to 13,421.55, 20,153.39 and 11,368.47 is: 17,070.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.55 : 20,153.39 = 11,368.47 : x
  2. Step 2: Convert to fraction form
    13,421.55/20,153.39 = 11,368.47/x
  3. Step 3: Cross multiply
    13,421.55x = 20,153.39 × 11,368.47
  4. Step 4: Simplify right side
    13,421.55x = 229,113,152.77
  5. Step 5: Solve for x
    x = 229,113,152.77/13,421.55
  6. Step 6: Final answer
    x = 17,070.54

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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.