Home / 38,700.99-53,407.76-21,705.84

Finding the Fourth Proportional to 38,700.99, 53,407.76 and 21,705.84

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Solution

The fourth proportional to 38,700.99, 53,407.76 and 21,705.84 is: 29,954.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,700.99 : 53,407.76 = 21,705.84 : x
  2. Step 2: Convert to fraction form
    38,700.99/53,407.76 = 21,705.84/x
  3. Step 3: Cross multiply
    38,700.99x = 53,407.76 × 21,705.84
  4. Step 4: Simplify right side
    38,700.99x = 1,159,260,184.79
  5. Step 5: Solve for x
    x = 1,159,260,184.79/38,700.99
  6. Step 6: Final answer
    x = 29,954.28

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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.