Home / 13,117.04-18,101.60-7,812.08

Finding the Fourth Proportional to 13,117.04, 18,101.60 and 7,812.08

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Solution

The fourth proportional to 13,117.04, 18,101.60 and 7,812.08 is: 10,780.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.04 : 18,101.60 = 7,812.08 : x
  2. Step 2: Convert to fraction form
    13,117.04/18,101.60 = 7,812.08/x
  3. Step 3: Cross multiply
    13,117.04x = 18,101.60 × 7,812.08
  4. Step 4: Simplify right side
    13,117.04x = 141,411,147.33
  5. Step 5: Solve for x
    x = 141,411,147.33/13,117.04
  6. Step 6: Final answer
    x = 10,780.72

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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.