Home / 38,400.04-52,985.61-21,400.55

Finding the Fourth Proportional to 38,400.04, 52,985.61 and 21,400.55

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Solution

The fourth proportional to 38,400.04, 52,985.61 and 21,400.55 is: 29,529.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,400.04 : 52,985.61 = 21,400.55 : x
  2. Step 2: Convert to fraction form
    38,400.04/52,985.61 = 21,400.55/x
  3. Step 3: Cross multiply
    38,400.04x = 52,985.61 × 21,400.55
  4. Step 4: Simplify right side
    38,400.04x = 1,133,921,196.09
  5. Step 5: Solve for x
    x = 1,133,921,196.09/38,400.04
  6. Step 6: Final answer
    x = 29,529.17

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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.