Home / 15,177.93-20,931.89-9,513.25

Finding the Fourth Proportional to 15,177.93, 20,931.89 and 9,513.25

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Solution

The fourth proportional to 15,177.93, 20,931.89 and 9,513.25 is: 13,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,177.93 : 20,931.89 = 9,513.25 : x
  2. Step 2: Convert to fraction form
    15,177.93/20,931.89 = 9,513.25/x
  3. Step 3: Cross multiply
    15,177.93x = 20,931.89 × 9,513.25
  4. Step 4: Simplify right side
    15,177.93x = 199,130,282.91
  5. Step 5: Solve for x
    x = 199,130,282.91/15,177.93
  6. Step 6: Final answer
    x = 13,119.72

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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.