Home / 21,862.13-30,169.73-12,430.69

Finding the Fourth Proportional to 21,862.13, 30,169.73 and 12,430.69

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Solution

The fourth proportional to 21,862.13, 30,169.73 and 12,430.69 is: 17,154.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.13 : 30,169.73 = 12,430.69 : x
  2. Step 2: Convert to fraction form
    21,862.13/30,169.73 = 12,430.69/x
  3. Step 3: Cross multiply
    21,862.13x = 30,169.73 × 12,430.69
  4. Step 4: Simplify right side
    21,862.13x = 375,030,516.67
  5. Step 5: Solve for x
    x = 375,030,516.67/21,862.13
  6. Step 6: Final answer
    x = 17,154.35

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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.