Home / 15,284.30-21,065.52-13,154.54

Finding the Fourth Proportional to 15,284.30, 21,065.52 and 13,154.54

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Solution

The fourth proportional to 15,284.30, 21,065.52 and 13,154.54 is: 18,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.30 : 21,065.52 = 13,154.54 : x
  2. Step 2: Convert to fraction form
    15,284.30/21,065.52 = 13,154.54/x
  3. Step 3: Cross multiply
    15,284.30x = 21,065.52 × 13,154.54
  4. Step 4: Simplify right side
    15,284.30x = 277,107,225.46
  5. Step 5: Solve for x
    x = 277,107,225.46/15,284.30
  6. Step 6: Final answer
    x = 18,130.19

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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.