Home / 25,615.80-38,430.18-8,085.60

Finding the Fourth Proportional to 25,615.80, 38,430.18 and 8,085.60

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Solution

The fourth proportional to 25,615.80, 38,430.18 and 8,085.60 is: 12,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,615.80 : 38,430.18 = 8,085.60 : x
  2. Step 2: Convert to fraction form
    25,615.80/38,430.18 = 8,085.60/x
  3. Step 3: Cross multiply
    25,615.80x = 38,430.18 × 8,085.60
  4. Step 4: Simplify right side
    25,615.80x = 310,731,063.41
  5. Step 5: Solve for x
    x = 310,731,063.41/25,615.80
  6. Step 6: Final answer
    x = 12,130.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.