Home / 27,762.08-38,312.16-15,186.72

Finding the Fourth Proportional to 27,762.08, 38,312.16 and 15,186.72

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Solution

The fourth proportional to 27,762.08, 38,312.16 and 15,186.72 is: 20,957.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,762.08 : 38,312.16 = 15,186.72 : x
  2. Step 2: Convert to fraction form
    27,762.08/38,312.16 = 15,186.72/x
  3. Step 3: Cross multiply
    27,762.08x = 38,312.16 × 15,186.72
  4. Step 4: Simplify right side
    27,762.08x = 581,836,046.52
  5. Step 5: Solve for x
    x = 581,836,046.52/27,762.08
  6. Step 6: Final answer
    x = 20,957.94

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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.