Home / 18,457.30-25,457.47-13,920.17

Finding the Fourth Proportional to 18,457.30, 25,457.47 and 13,920.17

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Solution

The fourth proportional to 18,457.30, 25,457.47 and 13,920.17 is: 19,199.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.30 : 25,457.47 = 13,920.17 : x
  2. Step 2: Convert to fraction form
    18,457.30/25,457.47 = 13,920.17/x
  3. Step 3: Cross multiply
    18,457.30x = 25,457.47 × 13,920.17
  4. Step 4: Simplify right side
    18,457.30x = 354,372,113.28
  5. Step 5: Solve for x
    x = 354,372,113.28/18,457.30
  6. Step 6: Final answer
    x = 19,199.57

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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.