Home / 39,328.81-54,274.73-21,424.76

Finding the Fourth Proportional to 39,328.81, 54,274.73 and 21,424.76

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Solution

The fourth proportional to 39,328.81, 54,274.73 and 21,424.76 is: 29,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,328.81 : 54,274.73 = 21,424.76 : x
  2. Step 2: Convert to fraction form
    39,328.81/54,274.73 = 21,424.76/x
  3. Step 3: Cross multiply
    39,328.81x = 54,274.73 × 21,424.76
  4. Step 4: Simplify right side
    39,328.81x = 1,162,823,064.31
  5. Step 5: Solve for x
    x = 1,162,823,064.31/39,328.81
  6. Step 6: Final answer
    x = 29,566.70

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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.