Home / 28,560.16-39,412.72-15,985

Finding the Fourth Proportional to 28,560.16, 39,412.72 and 15,985

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Solution

The fourth proportional to 28,560.16, 39,412.72 and 15,985 is: 22,059.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.16 : 39,412.72 = 15,985 : x
  2. Step 2: Convert to fraction form
    28,560.16/39,412.72 = 15,985/x
  3. Step 3: Cross multiply
    28,560.16x = 39,412.72 × 15,985
  4. Step 4: Simplify right side
    28,560.16x = 630,012,329.20
  5. Step 5: Solve for x
    x = 630,012,329.20/28,560.16
  6. Step 6: Final answer
    x = 22,059.13

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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.