Home / 13,557.31-18,709.10-7,588.99

Finding the Fourth Proportional to 13,557.31, 18,709.10 and 7,588.99

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Solution

The fourth proportional to 13,557.31, 18,709.10 and 7,588.99 is: 10,472.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.31 : 18,709.10 = 7,588.99 : x
  2. Step 2: Convert to fraction form
    13,557.31/18,709.10 = 7,588.99/x
  3. Step 3: Cross multiply
    13,557.31x = 18,709.10 × 7,588.99
  4. Step 4: Simplify right side
    13,557.31x = 141,983,172.81
  5. Step 5: Solve for x
    x = 141,983,172.81/13,557.31
  6. Step 6: Final answer
    x = 10,472.81

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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.