Home / 27,810.30-38,368.68-15,865.04

Finding the Fourth Proportional to 27,810.30, 38,368.68 and 15,865.04

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Solution

The fourth proportional to 27,810.30, 38,368.68 and 15,865.04 is: 21,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.30 : 38,368.68 = 15,865.04 : x
  2. Step 2: Convert to fraction form
    27,810.30/38,368.68 = 15,865.04/x
  3. Step 3: Cross multiply
    27,810.30x = 38,368.68 × 15,865.04
  4. Step 4: Simplify right side
    27,810.30x = 608,720,642.95
  5. Step 5: Solve for x
    x = 608,720,642.95/27,810.30
  6. Step 6: Final answer
    x = 21,888.32

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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.