Home / 38,714.61-53,430.21-21,723.45

Finding the Fourth Proportional to 38,714.61, 53,430.21 and 21,723.45

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Solution

The fourth proportional to 38,714.61, 53,430.21 and 21,723.45 is: 29,980.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,714.61 : 53,430.21 = 21,723.45 : x
  2. Step 2: Convert to fraction form
    38,714.61/53,430.21 = 21,723.45/x
  3. Step 3: Cross multiply
    38,714.61x = 53,430.21 × 21,723.45
  4. Step 4: Simplify right side
    38,714.61x = 1,160,688,228.27
  5. Step 5: Solve for x
    x = 1,160,688,228.27/38,714.61
  6. Step 6: Final answer
    x = 29,980.62

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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.