Home / 27,812.30-38,371.20-19,312.16

Finding the Fourth Proportional to 27,812.30, 38,371.20 and 19,312.16

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Solution

The fourth proportional to 27,812.30, 38,371.20 and 19,312.16 is: 26,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,812.30 : 38,371.20 = 19,312.16 : x
  2. Step 2: Convert to fraction form
    27,812.30/38,371.20 = 19,312.16/x
  3. Step 3: Cross multiply
    27,812.30x = 38,371.20 × 19,312.16
  4. Step 4: Simplify right side
    27,812.30x = 741,030,753.79
  5. Step 5: Solve for x
    x = 741,030,753.79/27,812.30
  6. Step 6: Final answer
    x = 26,643.99

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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.