Home / 13,320.24-19,980.39-12,508.32

Finding the Fourth Proportional to 13,320.24, 19,980.39 and 12,508.32

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Solution

The fourth proportional to 13,320.24, 19,980.39 and 12,508.32 is: 18,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.24 : 19,980.39 = 12,508.32 : x
  2. Step 2: Convert to fraction form
    13,320.24/19,980.39 = 12,508.32/x
  3. Step 3: Cross multiply
    13,320.24x = 19,980.39 × 12,508.32
  4. Step 4: Simplify right side
    13,320.24x = 249,921,111.84
  5. Step 5: Solve for x
    x = 249,921,111.84/13,320.24
  6. Step 6: Final answer
    x = 18,762.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.