Home / 20,461.65-28,227.54-13,291.08

Finding the Fourth Proportional to 20,461.65, 28,227.54 and 13,291.08

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Solution

The fourth proportional to 20,461.65, 28,227.54 and 13,291.08 is: 18,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.65 : 28,227.54 = 13,291.08 : x
  2. Step 2: Convert to fraction form
    20,461.65/28,227.54 = 13,291.08/x
  3. Step 3: Cross multiply
    20,461.65x = 28,227.54 × 13,291.08
  4. Step 4: Simplify right side
    20,461.65x = 375,174,492.34
  5. Step 5: Solve for x
    x = 375,174,492.34/20,461.65
  6. Step 6: Final answer
    x = 18,335.50

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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.