Home / 13,156.53-19,565.76-12,741.32

Finding the Fourth Proportional to 13,156.53, 19,565.76 and 12,741.32

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Solution

The fourth proportional to 13,156.53, 19,565.76 and 12,741.32 is: 18,948.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.53 : 19,565.76 = 12,741.32 : x
  2. Step 2: Convert to fraction form
    13,156.53/19,565.76 = 12,741.32/x
  3. Step 3: Cross multiply
    13,156.53x = 19,565.76 × 12,741.32
  4. Step 4: Simplify right side
    13,156.53x = 249,293,511.37
  5. Step 5: Solve for x
    x = 249,293,511.37/13,156.53
  6. Step 6: Final answer
    x = 18,948.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.