Home / 15,364.71-21,158.69-13,347.20

Finding the Fourth Proportional to 15,364.71, 21,158.69 and 13,347.20

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Solution

The fourth proportional to 15,364.71, 21,158.69 and 13,347.20 is: 18,380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,364.71 : 21,158.69 = 13,347.20 : x
  2. Step 2: Convert to fraction form
    15,364.71/21,158.69 = 13,347.20/x
  3. Step 3: Cross multiply
    15,364.71x = 21,158.69 × 13,347.20
  4. Step 4: Simplify right side
    15,364.71x = 282,409,253.33
  5. Step 5: Solve for x
    x = 282,409,253.33/15,364.71
  6. Step 6: Final answer
    x = 18,380.38

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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.