Home / 20,751.24-31,085.70-9,642.60

Finding the Fourth Proportional to 20,751.24, 31,085.70 and 9,642.60

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Solution

The fourth proportional to 20,751.24, 31,085.70 and 9,642.60 is: 14,444.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.24 : 31,085.70 = 9,642.60 : x
  2. Step 2: Convert to fraction form
    20,751.24/31,085.70 = 9,642.60/x
  3. Step 3: Cross multiply
    20,751.24x = 31,085.70 × 9,642.60
  4. Step 4: Simplify right side
    20,751.24x = 299,746,970.82
  5. Step 5: Solve for x
    x = 299,746,970.82/20,751.24
  6. Step 6: Final answer
    x = 14,444.77

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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.