Home / 19,139.60-28,709.40-14,765.60

Finding the Fourth Proportional to 19,139.60, 28,709.40 and 14,765.60

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Solution

The fourth proportional to 19,139.60, 28,709.40 and 14,765.60 is: 22,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.60 : 28,709.40 = 14,765.60 : x
  2. Step 2: Convert to fraction form
    19,139.60/28,709.40 = 14,765.60/x
  3. Step 3: Cross multiply
    19,139.60x = 28,709.40 × 14,765.60
  4. Step 4: Simplify right side
    19,139.60x = 423,911,516.64
  5. Step 5: Solve for x
    x = 423,911,516.64/19,139.60
  6. Step 6: Final answer
    x = 22,148.40

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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.