Home / 27,810.61-38,347.90-21,423.02

Finding the Fourth Proportional to 27,810.61, 38,347.90 and 21,423.02

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Solution

The fourth proportional to 27,810.61, 38,347.90 and 21,423.02 is: 29,540.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.61 : 38,347.90 = 21,423.02 : x
  2. Step 2: Convert to fraction form
    27,810.61/38,347.90 = 21,423.02/x
  3. Step 3: Cross multiply
    27,810.61x = 38,347.90 × 21,423.02
  4. Step 4: Simplify right side
    27,810.61x = 821,527,583.36
  5. Step 5: Solve for x
    x = 821,527,583.36/27,810.61
  6. Step 6: Final answer
    x = 29,540.08

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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.