Home / 21,919.95-30,248.37-12,360.06

Finding the Fourth Proportional to 21,919.95, 30,248.37 and 12,360.06

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Solution

The fourth proportional to 21,919.95, 30,248.37 and 12,360.06 is: 17,056.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.95 : 30,248.37 = 12,360.06 : x
  2. Step 2: Convert to fraction form
    21,919.95/30,248.37 = 12,360.06/x
  3. Step 3: Cross multiply
    21,919.95x = 30,248.37 × 12,360.06
  4. Step 4: Simplify right side
    21,919.95x = 373,871,668.10
  5. Step 5: Solve for x
    x = 373,871,668.10/21,919.95
  6. Step 6: Final answer
    x = 17,056.23

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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.