Home / 21,325.51-31,988.27-10,930.63

Finding the Fourth Proportional to 21,325.51, 31,988.27 and 10,930.63

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Solution

The fourth proportional to 21,325.51, 31,988.27 and 10,930.63 is: 16,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.51 : 31,988.27 = 10,930.63 : x
  2. Step 2: Convert to fraction form
    21,325.51/31,988.27 = 10,930.63/x
  3. Step 3: Cross multiply
    21,325.51x = 31,988.27 × 10,930.63
  4. Step 4: Simplify right side
    21,325.51x = 349,651,889.06
  5. Step 5: Solve for x
    x = 349,651,889.06/21,325.51
  6. Step 6: Final answer
    x = 16,395.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.