Home / 13,397.55-18,489.70-7,429.60

Finding the Fourth Proportional to 13,397.55, 18,489.70 and 7,429.60

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Solution

The fourth proportional to 13,397.55, 18,489.70 and 7,429.60 is: 10,253.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.55 : 18,489.70 = 7,429.60 : x
  2. Step 2: Convert to fraction form
    13,397.55/18,489.70 = 7,429.60/x
  3. Step 3: Cross multiply
    13,397.55x = 18,489.70 × 7,429.60
  4. Step 4: Simplify right side
    13,397.55x = 137,371,075.12
  5. Step 5: Solve for x
    x = 137,371,075.12/13,397.55
  6. Step 6: Final answer
    x = 10,253.45

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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.