Home / 19,428.82-26,810.67-10,931.30

Finding the Fourth Proportional to 19,428.82, 26,810.67 and 10,931.30

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Solution

The fourth proportional to 19,428.82, 26,810.67 and 10,931.30 is: 15,084.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.82 : 26,810.67 = 10,931.30 : x
  2. Step 2: Convert to fraction form
    19,428.82/26,810.67 = 10,931.30/x
  3. Step 3: Cross multiply
    19,428.82x = 26,810.67 × 10,931.30
  4. Step 4: Simplify right side
    19,428.82x = 293,075,476.97
  5. Step 5: Solve for x
    x = 293,075,476.97/19,428.82
  6. Step 6: Final answer
    x = 15,084.57

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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.