Home / 25,457.87-35,130.27-15,380.35

Finding the Fourth Proportional to 25,457.87, 35,130.27 and 15,380.35

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Solution

The fourth proportional to 25,457.87, 35,130.27 and 15,380.35 is: 21,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,457.87 : 35,130.27 = 15,380.35 : x
  2. Step 2: Convert to fraction form
    25,457.87/35,130.27 = 15,380.35/x
  3. Step 3: Cross multiply
    25,457.87x = 35,130.27 × 15,380.35
  4. Step 4: Simplify right side
    25,457.87x = 540,315,834.43
  5. Step 5: Solve for x
    x = 540,315,834.43/25,457.87
  6. Step 6: Final answer
    x = 21,223.93

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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.