Home / 19,340.21-26,688.10-11,381.35

Finding the Fourth Proportional to 19,340.21, 26,688.10 and 11,381.35

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Solution

The fourth proportional to 19,340.21, 26,688.10 and 11,381.35 is: 15,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,340.21 : 26,688.10 = 11,381.35 : x
  2. Step 2: Convert to fraction form
    19,340.21/26,688.10 = 11,381.35/x
  3. Step 3: Cross multiply
    19,340.21x = 26,688.10 × 11,381.35
  4. Step 4: Simplify right side
    19,340.21x = 303,746,606.94
  5. Step 5: Solve for x
    x = 303,746,606.94/19,340.21
  6. Step 6: Final answer
    x = 15,705.45

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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.