Home / 38,702.13-53,409.55-21,710.15

Finding the Fourth Proportional to 38,702.13, 53,409.55 and 21,710.15

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Solution

The fourth proportional to 38,702.13, 53,409.55 and 21,710.15 is: 29,960.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,702.13 : 53,409.55 = 21,710.15 : x
  2. Step 2: Convert to fraction form
    38,702.13/53,409.55 = 21,710.15/x
  3. Step 3: Cross multiply
    38,702.13x = 53,409.55 × 21,710.15
  4. Step 4: Simplify right side
    38,702.13x = 1,159,529,341.93
  5. Step 5: Solve for x
    x = 1,159,529,341.93/38,702.13
  6. Step 6: Final answer
    x = 29,960.35

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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.