Home / 27,703.50-38,231.04-15,128.28

Finding the Fourth Proportional to 27,703.50, 38,231.04 and 15,128.28

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Solution

The fourth proportional to 27,703.50, 38,231.04 and 15,128.28 is: 20,877.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,703.50 : 38,231.04 = 15,128.28 : x
  2. Step 2: Convert to fraction form
    27,703.50/38,231.04 = 15,128.28/x
  3. Step 3: Cross multiply
    27,703.50x = 38,231.04 × 15,128.28
  4. Step 4: Simplify right side
    27,703.50x = 578,369,877.81
  5. Step 5: Solve for x
    x = 578,369,877.81/27,703.50
  6. Step 6: Final answer
    x = 20,877.14

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Half scale
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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.