Home / 13,506.90-18,639.54-7,538.46

Finding the Fourth Proportional to 13,506.90, 18,639.54 and 7,538.46

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Solution

The fourth proportional to 13,506.90, 18,639.54 and 7,538.46 is: 10,403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.90 : 18,639.54 = 7,538.46 : x
  2. Step 2: Convert to fraction form
    13,506.90/18,639.54 = 7,538.46/x
  3. Step 3: Cross multiply
    13,506.90x = 18,639.54 × 7,538.46
  4. Step 4: Simplify right side
    13,506.90x = 140,513,426.71
  5. Step 5: Solve for x
    x = 140,513,426.71/13,506.90
  6. Step 6: Final answer
    x = 10,403.08

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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.