Home / 13,557.47-18,709.38-7,895.51

Finding the Fourth Proportional to 13,557.47, 18,709.38 and 7,895.51

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Solution

The fourth proportional to 13,557.47, 18,709.38 and 7,895.51 is: 10,895.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.47 : 18,709.38 = 7,895.51 : x
  2. Step 2: Convert to fraction form
    13,557.47/18,709.38 = 7,895.51/x
  3. Step 3: Cross multiply
    13,557.47x = 18,709.38 × 7,895.51
  4. Step 4: Simplify right side
    13,557.47x = 147,720,003.34
  5. Step 5: Solve for x
    x = 147,720,003.34/13,557.47
  6. Step 6: Final answer
    x = 10,895.84

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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.