Home / 28,567.01-39,420.29-15,990.05

Finding the Fourth Proportional to 28,567.01, 39,420.29 and 15,990.05

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Solution

The fourth proportional to 28,567.01, 39,420.29 and 15,990.05 is: 22,065.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,567.01 : 39,420.29 = 15,990.05 : x
  2. Step 2: Convert to fraction form
    28,567.01/39,420.29 = 15,990.05/x
  3. Step 3: Cross multiply
    28,567.01x = 39,420.29 × 15,990.05
  4. Step 4: Simplify right side
    28,567.01x = 630,332,328.16
  5. Step 5: Solve for x
    x = 630,332,328.16/28,567.01
  6. Step 6: Final answer
    x = 22,065.04

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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.