Home / 30,827.18-42,539.06-18,888.89

Finding the Fourth Proportional to 30,827.18, 42,539.06 and 18,888.89

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Solution

The fourth proportional to 30,827.18, 42,539.06 and 18,888.89 is: 26,065.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,827.18 : 42,539.06 = 18,888.89 : x
  2. Step 2: Convert to fraction form
    30,827.18/42,539.06 = 18,888.89/x
  3. Step 3: Cross multiply
    30,827.18x = 42,539.06 × 18,888.89
  4. Step 4: Simplify right side
    30,827.18x = 803,515,459.57
  5. Step 5: Solve for x
    x = 803,515,459.57/30,827.18
  6. Step 6: Final answer
    x = 26,065.16

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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.