Home / 31,011.51-42,777.61-19,508.08

Finding the Fourth Proportional to 31,011.51, 42,777.61 and 19,508.08

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Solution

The fourth proportional to 31,011.51, 42,777.61 and 19,508.08 is: 26,909.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,011.51 : 42,777.61 = 19,508.08 : x
  2. Step 2: Convert to fraction form
    31,011.51/42,777.61 = 19,508.08/x
  3. Step 3: Cross multiply
    31,011.51x = 42,777.61 × 19,508.08
  4. Step 4: Simplify right side
    31,011.51x = 834,509,038.09
  5. Step 5: Solve for x
    x = 834,509,038.09/31,011.51
  6. Step 6: Final answer
    x = 26,909.66

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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.