Home / 25,783.04-38,590.88-13,920.32

Finding the Fourth Proportional to 25,783.04, 38,590.88 and 13,920.32

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Solution

The fourth proportional to 25,783.04, 38,590.88 and 13,920.32 is: 20,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,783.04 : 38,590.88 = 13,920.32 : x
  2. Step 2: Convert to fraction form
    25,783.04/38,590.88 = 13,920.32/x
  3. Step 3: Cross multiply
    25,783.04x = 38,590.88 × 13,920.32
  4. Step 4: Simplify right side
    25,783.04x = 537,197,398.68
  5. Step 5: Solve for x
    x = 537,197,398.68/25,783.04
  6. Step 6: Final answer
    x = 20,835.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.