Home / 13,124.07-18,111.30-7,155.84

Finding the Fourth Proportional to 13,124.07, 18,111.30 and 7,155.84

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Solution

The fourth proportional to 13,124.07, 18,111.30 and 7,155.84 is: 9,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.07 : 18,111.30 = 7,155.84 : x
  2. Step 2: Convert to fraction form
    13,124.07/18,111.30 = 7,155.84/x
  3. Step 3: Cross multiply
    13,124.07x = 18,111.30 × 7,155.84
  4. Step 4: Simplify right side
    13,124.07x = 129,601,438.66
  5. Step 5: Solve for x
    x = 129,601,438.66/13,124.07
  6. Step 6: Final answer
    x = 9,875.10

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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.