Home / 23,138.84-31,931.32-13,707.56

Finding the Fourth Proportional to 23,138.84, 31,931.32 and 13,707.56

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Solution

The fourth proportional to 23,138.84, 31,931.32 and 13,707.56 is: 18,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.84 : 31,931.32 = 13,707.56 : x
  2. Step 2: Convert to fraction form
    23,138.84/31,931.32 = 13,707.56/x
  3. Step 3: Cross multiply
    23,138.84x = 31,931.32 × 13,707.56
  4. Step 4: Simplify right side
    23,138.84x = 437,700,484.78
  5. Step 5: Solve for x
    x = 437,700,484.78/23,138.84
  6. Step 6: Final answer
    x = 18,916.27

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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.