Home / 12,709.49-19,071.50-9,928.35

Finding the Fourth Proportional to 12,709.49, 19,071.50 and 9,928.35

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Solution

The fourth proportional to 12,709.49, 19,071.50 and 9,928.35 is: 14,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.49 : 19,071.50 = 9,928.35 : x
  2. Step 2: Convert to fraction form
    12,709.49/19,071.50 = 9,928.35/x
  3. Step 3: Cross multiply
    12,709.49x = 19,071.50 × 9,928.35
  4. Step 4: Simplify right side
    12,709.49x = 189,348,477.38
  5. Step 5: Solve for x
    x = 189,348,477.38/12,709.49
  6. Step 6: Final answer
    x = 14,898.20

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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.