Home / 19,139.85-26,414.40-10,643.50

Finding the Fourth Proportional to 19,139.85, 26,414.40 and 10,643.50

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Solution

The fourth proportional to 19,139.85, 26,414.40 and 10,643.50 is: 14,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.85 : 26,414.40 = 10,643.50 : x
  2. Step 2: Convert to fraction form
    19,139.85/26,414.40 = 10,643.50/x
  3. Step 3: Cross multiply
    19,139.85x = 26,414.40 × 10,643.50
  4. Step 4: Simplify right side
    19,139.85x = 281,141,666.40
  5. Step 5: Solve for x
    x = 281,141,666.40/19,139.85
  6. Step 6: Final answer
    x = 14,688.81

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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.