Home / 27,970.95-38,600.78-15,225.06

Finding the Fourth Proportional to 27,970.95, 38,600.78 and 15,225.06

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Solution

The fourth proportional to 27,970.95, 38,600.78 and 15,225.06 is: 21,011.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,970.95 : 38,600.78 = 15,225.06 : x
  2. Step 2: Convert to fraction form
    27,970.95/38,600.78 = 15,225.06/x
  3. Step 3: Cross multiply
    27,970.95x = 38,600.78 × 15,225.06
  4. Step 4: Simplify right side
    27,970.95x = 587,699,191.55
  5. Step 5: Solve for x
    x = 587,699,191.55/27,970.95
  6. Step 6: Final answer
    x = 21,011.06

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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.