Home / 15,553.40-21,457.57-9,574.68

Finding the Fourth Proportional to 15,553.40, 21,457.57 and 9,574.68

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Solution

The fourth proportional to 15,553.40, 21,457.57 and 9,574.68 is: 13,209.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.40 : 21,457.57 = 9,574.68 : x
  2. Step 2: Convert to fraction form
    15,553.40/21,457.57 = 9,574.68/x
  3. Step 3: Cross multiply
    15,553.40x = 21,457.57 × 9,574.68
  4. Step 4: Simplify right side
    15,553.40x = 205,449,318.45
  5. Step 5: Solve for x
    x = 205,449,318.45/15,553.40
  6. Step 6: Final answer
    x = 13,209.29

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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.