Home / 27,869.58-38,459.70-15,769.91

Finding the Fourth Proportional to 27,869.58, 38,459.70 and 15,769.91

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Solution

The fourth proportional to 27,869.58, 38,459.70 and 15,769.91 is: 21,762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,869.58 : 38,459.70 = 15,769.91 : x
  2. Step 2: Convert to fraction form
    27,869.58/38,459.70 = 15,769.91/x
  3. Step 3: Cross multiply
    27,869.58x = 38,459.70 × 15,769.91
  4. Step 4: Simplify right side
    27,869.58x = 606,506,103.78
  5. Step 5: Solve for x
    x = 606,506,103.78/27,869.58
  6. Step 6: Final answer
    x = 21,762.30

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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.