Home / 31,928.81-44,038.35-21,154.19

Finding the Fourth Proportional to 31,928.81, 44,038.35 and 21,154.19

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Solution

The fourth proportional to 31,928.81, 44,038.35 and 21,154.19 is: 29,177.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,928.81 : 44,038.35 = 21,154.19 : x
  2. Step 2: Convert to fraction form
    31,928.81/44,038.35 = 21,154.19/x
  3. Step 3: Cross multiply
    31,928.81x = 44,038.35 × 21,154.19
  4. Step 4: Simplify right side
    31,928.81x = 931,595,402.99
  5. Step 5: Solve for x
    x = 931,595,402.99/31,928.81
  6. Step 6: Final answer
    x = 29,177.27

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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.