Home / 19,158.90-26,439.40-10,661.38

Finding the Fourth Proportional to 19,158.90, 26,439.40 and 10,661.38

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Solution

The fourth proportional to 19,158.90, 26,439.40 and 10,661.38 is: 14,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.90 : 26,439.40 = 10,661.38 : x
  2. Step 2: Convert to fraction form
    19,158.90/26,439.40 = 10,661.38/x
  3. Step 3: Cross multiply
    19,158.90x = 26,439.40 × 10,661.38
  4. Step 4: Simplify right side
    19,158.90x = 281,880,490.37
  5. Step 5: Solve for x
    x = 281,880,490.37/19,158.90
  6. Step 6: Final answer
    x = 14,712.77

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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.