Home / 11,925.81-16,458.65-6,890.25

Finding the Fourth Proportional to 11,925.81, 16,458.65 and 6,890.25

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Solution

The fourth proportional to 11,925.81, 16,458.65 and 6,890.25 is: 9,509.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.81 : 16,458.65 = 6,890.25 : x
  2. Step 2: Convert to fraction form
    11,925.81/16,458.65 = 6,890.25/x
  3. Step 3: Cross multiply
    11,925.81x = 16,458.65 × 6,890.25
  4. Step 4: Simplify right side
    11,925.81x = 113,404,178.71
  5. Step 5: Solve for x
    x = 113,404,178.71/11,925.81
  6. Step 6: Final answer
    x = 9,509.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.