Home / 13,587.14-18,749.86-8,280.02

Finding the Fourth Proportional to 13,587.14, 18,749.86 and 8,280.02

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Solution

The fourth proportional to 13,587.14, 18,749.86 and 8,280.02 is: 11,426.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.14 : 18,749.86 = 8,280.02 : x
  2. Step 2: Convert to fraction form
    13,587.14/18,749.86 = 8,280.02/x
  3. Step 3: Cross multiply
    13,587.14x = 18,749.86 × 8,280.02
  4. Step 4: Simplify right side
    13,587.14x = 155,249,080.65
  5. Step 5: Solve for x
    x = 155,249,080.65/13,587.14
  6. Step 6: Final answer
    x = 11,426.18

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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.