Home / 13,445.68-18,552.86-7,477.20

Finding the Fourth Proportional to 13,445.68, 18,552.86 and 7,477.20

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Solution

The fourth proportional to 13,445.68, 18,552.86 and 7,477.20 is: 10,317.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.68 : 18,552.86 = 7,477.20 : x
  2. Step 2: Convert to fraction form
    13,445.68/18,552.86 = 7,477.20/x
  3. Step 3: Cross multiply
    13,445.68x = 18,552.86 × 7,477.20
  4. Step 4: Simplify right side
    13,445.68x = 138,723,444.79
  5. Step 5: Solve for x
    x = 138,723,444.79/13,445.68
  6. Step 6: Final answer
    x = 10,317.32

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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.