Home / 31,085.16-42,895.44-18,337.68

Finding the Fourth Proportional to 31,085.16, 42,895.44 and 18,337.68

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Solution

The fourth proportional to 31,085.16, 42,895.44 and 18,337.68 is: 25,304.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,085.16 : 42,895.44 = 18,337.68 : x
  2. Step 2: Convert to fraction form
    31,085.16/42,895.44 = 18,337.68/x
  3. Step 3: Cross multiply
    31,085.16x = 42,895.44 × 18,337.68
  4. Step 4: Simplify right side
    31,085.16x = 786,602,852.18
  5. Step 5: Solve for x
    x = 786,602,852.18/31,085.16
  6. Step 6: Final answer
    x = 25,304.77

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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.