Home / 25,138.48-34,648.35-21,527.20

Finding the Fourth Proportional to 25,138.48, 34,648.35 and 21,527.20

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Solution

The fourth proportional to 25,138.48, 34,648.35 and 21,527.20 is: 29,670.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.48 : 34,648.35 = 21,527.20 : x
  2. Step 2: Convert to fraction form
    25,138.48/34,648.35 = 21,527.20/x
  3. Step 3: Cross multiply
    25,138.48x = 34,648.35 × 21,527.20
  4. Step 4: Simplify right side
    25,138.48x = 745,881,960.12
  5. Step 5: Solve for x
    x = 745,881,960.12/25,138.48
  6. Step 6: Final answer
    x = 29,670.93

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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.