Home / 27,811.61-38,349.28-21,424.02

Finding the Fourth Proportional to 27,811.61, 38,349.28 and 21,424.02

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Solution

The fourth proportional to 27,811.61, 38,349.28 and 21,424.02 is: 29,541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,811.61 : 38,349.28 = 21,424.02 : x
  2. Step 2: Convert to fraction form
    27,811.61/38,349.28 = 21,424.02/x
  3. Step 3: Cross multiply
    27,811.61x = 38,349.28 × 21,424.02
  4. Step 4: Simplify right side
    27,811.61x = 821,595,741.71
  5. Step 5: Solve for x
    x = 821,595,741.71/27,811.61
  6. Step 6: Final answer
    x = 29,541.47

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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.