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Finding the Fourth Proportional to 30,671.65, 42,347.86 and 23,488.89

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Solution

The fourth proportional to 30,671.65, 42,347.86 and 23,488.89 is: 32,430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,671.65 : 42,347.86 = 23,488.89 : x
  2. Step 2: Convert to fraction form
    30,671.65/42,347.86 = 23,488.89/x
  3. Step 3: Cross multiply
    30,671.65x = 42,347.86 × 23,488.89
  4. Step 4: Simplify right side
    30,671.65x = 994,704,314.96
  5. Step 5: Solve for x
    x = 994,704,314.96/30,671.65
  6. Step 6: Final answer
    x = 32,430.74

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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.