Home / 27,812.56-38,381.56-15,875.76

Finding the Fourth Proportional to 27,812.56, 38,381.56 and 15,875.76

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Solution

The fourth proportional to 27,812.56, 38,381.56 and 15,875.76 is: 21,908.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,812.56 : 38,381.56 = 15,875.76 : x
  2. Step 2: Convert to fraction form
    27,812.56/38,381.56 = 15,875.76/x
  3. Step 3: Cross multiply
    27,812.56x = 38,381.56 × 15,875.76
  4. Step 4: Simplify right side
    27,812.56x = 609,336,434.99
  5. Step 5: Solve for x
    x = 609,336,434.99/27,812.56
  6. Step 6: Final answer
    x = 21,908.68

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Half scale
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Double scale
Find fourth proportional to 27,813.56, 38,382.94 and 15,876.76
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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.