Home / 13,617.95-20,428.16-5,298.57

Finding the Fourth Proportional to 13,617.95, 20,428.16 and 5,298.57

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Solution

The fourth proportional to 13,617.95, 20,428.16 and 5,298.57 is: 7,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.95 : 20,428.16 = 5,298.57 : x
  2. Step 2: Convert to fraction form
    13,617.95/20,428.16 = 5,298.57/x
  3. Step 3: Cross multiply
    13,617.95x = 20,428.16 × 5,298.57
  4. Step 4: Simplify right side
    13,617.95x = 108,240,009.24
  5. Step 5: Solve for x
    x = 108,240,009.24/13,617.95
  6. Step 6: Final answer
    x = 7,948.34

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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.