Home / 13,124.39-18,111.44-7,155.93

Finding the Fourth Proportional to 13,124.39, 18,111.44 and 7,155.93

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Solution

The fourth proportional to 13,124.39, 18,111.44 and 7,155.93 is: 9,875.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.39 : 18,111.44 = 7,155.93 : x
  2. Step 2: Convert to fraction form
    13,124.39/18,111.44 = 7,155.93/x
  3. Step 3: Cross multiply
    13,124.39x = 18,111.44 × 7,155.93
  4. Step 4: Simplify right side
    13,124.39x = 129,604,206.86
  5. Step 5: Solve for x
    x = 129,604,206.86/13,124.39
  6. Step 6: Final answer
    x = 9,875.06

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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.