Home / 31,102.14-42,916.63-18,355.86

Finding the Fourth Proportional to 31,102.14, 42,916.63 and 18,355.86

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Solution

The fourth proportional to 31,102.14, 42,916.63 and 18,355.86 is: 25,328.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.14 : 42,916.63 = 18,355.86 : x
  2. Step 2: Convert to fraction form
    31,102.14/42,916.63 = 18,355.86/x
  3. Step 3: Cross multiply
    31,102.14x = 42,916.63 × 18,355.86
  4. Step 4: Simplify right side
    31,102.14x = 787,771,345.59
  5. Step 5: Solve for x
    x = 787,771,345.59/31,102.14
  6. Step 6: Final answer
    x = 25,328.53

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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.