Home / 31,158.48-42,999.72-17,012.40

Finding the Fourth Proportional to 31,158.48, 42,999.72 and 17,012.40

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Solution

The fourth proportional to 31,158.48, 42,999.72 and 17,012.40 is: 23,477.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158.48 : 42,999.72 = 17,012.40 : x
  2. Step 2: Convert to fraction form
    31,158.48/42,999.72 = 17,012.40/x
  3. Step 3: Cross multiply
    31,158.48x = 42,999.72 × 17,012.40
  4. Step 4: Simplify right side
    31,158.48x = 731,528,436.53
  5. Step 5: Solve for x
    x = 731,528,436.53/31,158.48
  6. Step 6: Final answer
    x = 23,477.67

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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.