Home / 27,715.75-38,247.93-15,140.50

Finding the Fourth Proportional to 27,715.75, 38,247.93 and 15,140.50

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Solution

The fourth proportional to 27,715.75, 38,247.93 and 15,140.50 is: 20,894.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,715.75 : 38,247.93 = 15,140.50 : x
  2. Step 2: Convert to fraction form
    27,715.75/38,247.93 = 15,140.50/x
  3. Step 3: Cross multiply
    27,715.75x = 38,247.93 × 15,140.50
  4. Step 4: Simplify right side
    27,715.75x = 579,092,784.17
  5. Step 5: Solve for x
    x = 579,092,784.17/27,715.75
  6. Step 6: Final answer
    x = 20,894.00

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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.