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Finding the Fourth Proportional to 19,210.40, 28,804.08 and 7,509.68

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Solution

The fourth proportional to 19,210.40, 28,804.08 and 7,509.68 is: 11,260.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.40 : 28,804.08 = 7,509.68 : x
  2. Step 2: Convert to fraction form
    19,210.40/28,804.08 = 7,509.68/x
  3. Step 3: Cross multiply
    19,210.40x = 28,804.08 × 7,509.68
  4. Step 4: Simplify right side
    19,210.40x = 216,309,423.49
  5. Step 5: Solve for x
    x = 216,309,423.49/19,210.40
  6. Step 6: Final answer
    x = 11,260.02

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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.