Home / 19,810.31-27,336.83-11,312.90

Finding the Fourth Proportional to 19,810.31, 27,336.83 and 11,312.90

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Solution

The fourth proportional to 19,810.31, 27,336.83 and 11,312.90 is: 15,611.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.31 : 27,336.83 = 11,312.90 : x
  2. Step 2: Convert to fraction form
    19,810.31/27,336.83 = 11,312.90/x
  3. Step 3: Cross multiply
    19,810.31x = 27,336.83 × 11,312.90
  4. Step 4: Simplify right side
    19,810.31x = 309,258,715.71
  5. Step 5: Solve for x
    x = 309,258,715.71/19,810.31
  6. Step 6: Final answer
    x = 15,611.00

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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.