Home / 15,486.39-23,128.74-12,371.13

Finding the Fourth Proportional to 15,486.39, 23,128.74 and 12,371.13

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Solution

The fourth proportional to 15,486.39, 23,128.74 and 12,371.13 is: 18,476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.39 : 23,128.74 = 12,371.13 : x
  2. Step 2: Convert to fraction form
    15,486.39/23,128.74 = 12,371.13/x
  3. Step 3: Cross multiply
    15,486.39x = 23,128.74 × 12,371.13
  4. Step 4: Simplify right side
    15,486.39x = 286,128,649.28
  5. Step 5: Solve for x
    x = 286,128,649.28/15,486.39
  6. Step 6: Final answer
    x = 18,476.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.