Home / 27,315.64-37,695.54-15,378.40

Finding the Fourth Proportional to 27,315.64, 37,695.54 and 15,378.40

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Solution

The fourth proportional to 27,315.64, 37,695.54 and 15,378.40 is: 21,222.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,315.64 : 37,695.54 = 15,378.40 : x
  2. Step 2: Convert to fraction form
    27,315.64/37,695.54 = 15,378.40/x
  3. Step 3: Cross multiply
    27,315.64x = 37,695.54 × 15,378.40
  4. Step 4: Simplify right side
    27,315.64x = 579,697,092.34
  5. Step 5: Solve for x
    x = 579,697,092.34/27,315.64
  6. Step 6: Final answer
    x = 21,222.17

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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.