Home / 13,057.15-18,018.81-7,088.77

Finding the Fourth Proportional to 13,057.15, 18,018.81 and 7,088.77

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Solution

The fourth proportional to 13,057.15, 18,018.81 and 7,088.77 is: 9,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.15 : 18,018.81 = 7,088.77 : x
  2. Step 2: Convert to fraction form
    13,057.15/18,018.81 = 7,088.77/x
  3. Step 3: Cross multiply
    13,057.15x = 18,018.81 × 7,088.77
  4. Step 4: Simplify right side
    13,057.15x = 127,731,199.76
  5. Step 5: Solve for x
    x = 127,731,199.76/13,057.15
  6. Step 6: Final answer
    x = 9,782.47

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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.