Home / 13,445.51-18,554.55-7,477.13

Finding the Fourth Proportional to 13,445.51, 18,554.55 and 7,477.13

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Solution

The fourth proportional to 13,445.51, 18,554.55 and 7,477.13 is: 10,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.51 : 18,554.55 = 7,477.13 : x
  2. Step 2: Convert to fraction form
    13,445.51/18,554.55 = 7,477.13/x
  3. Step 3: Cross multiply
    13,445.51x = 18,554.55 × 7,477.13
  4. Step 4: Simplify right side
    13,445.51x = 138,734,689.67
  5. Step 5: Solve for x
    x = 138,734,689.67/13,445.51
  6. Step 6: Final answer
    x = 10,318.29

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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.