Home / 13,057.10-18,018.80-7,088.76

Finding the Fourth Proportional to 13,057.10, 18,018.80 and 7,088.76

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Solution

The fourth proportional to 13,057.10, 18,018.80 and 7,088.76 is: 9,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.10 : 18,018.80 = 7,088.76 : x
  2. Step 2: Convert to fraction form
    13,057.10/18,018.80 = 7,088.76/x
  3. Step 3: Cross multiply
    13,057.10x = 18,018.80 × 7,088.76
  4. Step 4: Simplify right side
    13,057.10x = 127,730,948.69
  5. Step 5: Solve for x
    x = 127,730,948.69/13,057.10
  6. Step 6: Final answer
    x = 9,782.49

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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.