Home / 28,208.03-42,312.11-11,565.09

Finding the Fourth Proportional to 28,208.03, 42,312.11 and 11,565.09

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Solution

The fourth proportional to 28,208.03, 42,312.11 and 11,565.09 is: 17,347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.03 : 42,312.11 = 11,565.09 : x
  2. Step 2: Convert to fraction form
    28,208.03/42,312.11 = 11,565.09/x
  3. Step 3: Cross multiply
    28,208.03x = 42,312.11 × 11,565.09
  4. Step 4: Simplify right side
    28,208.03x = 489,343,302.41
  5. Step 5: Solve for x
    x = 489,343,302.41/28,208.03
  6. Step 6: Final answer
    x = 17,347.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.