Home / 27,558.69-38,031.42-15,621.76

Finding the Fourth Proportional to 27,558.69, 38,031.42 and 15,621.76

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Solution

The fourth proportional to 27,558.69, 38,031.42 and 15,621.76 is: 21,558.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,558.69 : 38,031.42 = 15,621.76 : x
  2. Step 2: Convert to fraction form
    27,558.69/38,031.42 = 15,621.76/x
  3. Step 3: Cross multiply
    27,558.69x = 38,031.42 × 15,621.76
  4. Step 4: Simplify right side
    27,558.69x = 594,117,715.70
  5. Step 5: Solve for x
    x = 594,117,715.70/27,558.69
  6. Step 6: Final answer
    x = 21,558.27

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Half scale
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Double 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.