Home / 25,457.49-35,129.75-15,379.98

Finding the Fourth Proportional to 25,457.49, 35,129.75 and 15,379.98

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Solution

The fourth proportional to 25,457.49, 35,129.75 and 15,379.98 is: 21,223.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,457.49 : 35,129.75 = 15,379.98 : x
  2. Step 2: Convert to fraction form
    25,457.49/35,129.75 = 15,379.98/x
  3. Step 3: Cross multiply
    25,457.49x = 35,129.75 × 15,379.98
  4. Step 4: Simplify right side
    25,457.49x = 540,294,730.28
  5. Step 5: Solve for x
    x = 540,294,730.28/25,457.49
  6. Step 6: Final answer
    x = 21,223.41

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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.