Home / 13,557.68-18,707.90-7,587.84

Finding the Fourth Proportional to 13,557.68, 18,707.90 and 7,587.84

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Solution

The fourth proportional to 13,557.68, 18,707.90 and 7,587.84 is: 10,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.68 : 18,707.90 = 7,587.84 : x
  2. Step 2: Convert to fraction form
    13,557.68/18,707.90 = 7,587.84/x
  3. Step 3: Cross multiply
    13,557.68x = 18,707.90 × 7,587.84
  4. Step 4: Simplify right side
    13,557.68x = 141,952,551.94
  5. Step 5: Solve for x
    x = 141,952,551.94/13,557.68
  6. Step 6: Final answer
    x = 10,470.27

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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.