Home / 15,479.89-21,368.79-10,450.92

Finding the Fourth Proportional to 15,479.89, 21,368.79 and 10,450.92

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Solution

The fourth proportional to 15,479.89, 21,368.79 and 10,450.92 is: 14,426.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,479.89 : 21,368.79 = 10,450.92 : x
  2. Step 2: Convert to fraction form
    15,479.89/21,368.79 = 10,450.92/x
  3. Step 3: Cross multiply
    15,479.89x = 21,368.79 × 10,450.92
  4. Step 4: Simplify right side
    15,479.89x = 223,323,579.81
  5. Step 5: Solve for x
    x = 223,323,579.81/15,479.89
  6. Step 6: Final answer
    x = 14,426.69

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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.