Home / 28,211.40-38,931.98-17,601.21

Finding the Fourth Proportional to 28,211.40, 38,931.98 and 17,601.21

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Solution

The fourth proportional to 28,211.40, 38,931.98 and 17,601.21 is: 24,289.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.40 : 38,931.98 = 17,601.21 : x
  2. Step 2: Convert to fraction form
    28,211.40/38,931.98 = 17,601.21/x
  3. Step 3: Cross multiply
    28,211.40x = 38,931.98 × 17,601.21
  4. Step 4: Simplify right side
    28,211.40x = 685,249,867.69
  5. Step 5: Solve for x
    x = 685,249,867.69/28,211.40
  6. Step 6: Final answer
    x = 24,289.82

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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.