Home / 27,957.15-38,580.57-15,210.72

Finding the Fourth Proportional to 27,957.15, 38,580.57 and 15,210.72

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Solution

The fourth proportional to 27,957.15, 38,580.57 and 15,210.72 is: 20,990.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957.15 : 38,580.57 = 15,210.72 : x
  2. Step 2: Convert to fraction form
    27,957.15/38,580.57 = 15,210.72/x
  3. Step 3: Cross multiply
    27,957.15x = 38,580.57 × 15,210.72
  4. Step 4: Simplify right side
    27,957.15x = 586,838,247.71
  5. Step 5: Solve for x
    x = 586,838,247.71/27,957.15
  6. Step 6: Final answer
    x = 20,990.63

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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.