Home / 38,518.30-53,154.30-21,521.50

Finding the Fourth Proportional to 38,518.30, 53,154.30 and 21,521.50

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Solution

The fourth proportional to 38,518.30, 53,154.30 and 21,521.50 is: 29,699.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.30 : 53,154.30 = 21,521.50 : x
  2. Step 2: Convert to fraction form
    38,518.30/53,154.30 = 21,521.50/x
  3. Step 3: Cross multiply
    38,518.30x = 53,154.30 × 21,521.50
  4. Step 4: Simplify right side
    38,518.30x = 1,143,960,267.45
  5. Step 5: Solve for x
    x = 1,143,960,267.45/38,518.30
  6. Step 6: Final answer
    x = 29,699.14

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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.