Home / 15,854.76-21,881.71-9,140.27

Finding the Fourth Proportional to 15,854.76, 21,881.71 and 9,140.27

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Solution

The fourth proportional to 15,854.76, 21,881.71 and 9,140.27 is: 12,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,854.76 : 21,881.71 = 9,140.27 : x
  2. Step 2: Convert to fraction form
    15,854.76/21,881.71 = 9,140.27/x
  3. Step 3: Cross multiply
    15,854.76x = 21,881.71 × 9,140.27
  4. Step 4: Simplify right side
    15,854.76x = 200,004,639.48
  5. Step 5: Solve for x
    x = 200,004,639.48/15,854.76
  6. Step 6: Final answer
    x = 12,614.80

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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.