Home / 13,445.65-18,555.30-7,477.10

Finding the Fourth Proportional to 13,445.65, 18,555.30 and 7,477.10

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Solution

The fourth proportional to 13,445.65, 18,555.30 and 7,477.10 is: 10,318.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.65 : 18,555.30 = 7,477.10 : x
  2. Step 2: Convert to fraction form
    13,445.65/18,555.30 = 7,477.10/x
  3. Step 3: Cross multiply
    13,445.65x = 18,555.30 × 7,477.10
  4. Step 4: Simplify right side
    13,445.65x = 138,739,703.47
  5. Step 5: Solve for x
    x = 138,739,703.47/13,445.65
  6. Step 6: Final answer
    x = 10,318.56

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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.