Home / 38,973.19-53,779.80-21,981.61

Finding the Fourth Proportional to 38,973.19, 53,779.80 and 21,981.61

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Solution

The fourth proportional to 38,973.19, 53,779.80 and 21,981.61 is: 30,332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,973.19 : 53,779.80 = 21,981.61 : x
  2. Step 2: Convert to fraction form
    38,973.19/53,779.80 = 21,981.61/x
  3. Step 3: Cross multiply
    38,973.19x = 53,779.80 × 21,981.61
  4. Step 4: Simplify right side
    38,973.19x = 1,182,166,589.48
  5. Step 5: Solve for x
    x = 1,182,166,589.48/38,973.19
  6. Step 6: Final answer
    x = 30,332.82

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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.