Home / 27,711.90-38,242.65-15,776.01

Finding the Fourth Proportional to 27,711.90, 38,242.65 and 15,776.01

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Solution

The fourth proportional to 27,711.90, 38,242.65 and 15,776.01 is: 21,771.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,711.90 : 38,242.65 = 15,776.01 : x
  2. Step 2: Convert to fraction form
    27,711.90/38,242.65 = 15,776.01/x
  3. Step 3: Cross multiply
    27,711.90x = 38,242.65 × 15,776.01
  4. Step 4: Simplify right side
    27,711.90x = 603,316,428.83
  5. Step 5: Solve for x
    x = 603,316,428.83/27,711.90
  6. Step 6: Final answer
    x = 21,771.02

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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.