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Finding the Fourth Proportional to 19,313.68, 28,970.52 and 8,924.08

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Solution

The fourth proportional to 19,313.68, 28,970.52 and 8,924.08 is: 13,386.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.68 : 28,970.52 = 8,924.08 : x
  2. Step 2: Convert to fraction form
    19,313.68/28,970.52 = 8,924.08/x
  3. Step 3: Cross multiply
    19,313.68x = 28,970.52 × 8,924.08
  4. Step 4: Simplify right side
    19,313.68x = 258,535,238.12
  5. Step 5: Solve for x
    x = 258,535,238.12/19,313.68
  6. Step 6: Final answer
    x = 13,386.12

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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.