Home / 21,178.08-31,746.96-7,317.36

Finding the Fourth Proportional to 21,178.08, 31,746.96 and 7,317.36

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Solution

The fourth proportional to 21,178.08, 31,746.96 and 7,317.36 is: 10,969.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.08 : 31,746.96 = 7,317.36 : x
  2. Step 2: Convert to fraction form
    21,178.08/31,746.96 = 7,317.36/x
  3. Step 3: Cross multiply
    21,178.08x = 31,746.96 × 7,317.36
  4. Step 4: Simplify right side
    21,178.08x = 232,303,935.23
  5. Step 5: Solve for x
    x = 232,303,935.23/21,178.08
  6. Step 6: Final answer
    x = 10,969.07

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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.