Home / 28,312.98-39,072.36-15,566.72

Finding the Fourth Proportional to 28,312.98, 39,072.36 and 15,566.72

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Solution

The fourth proportional to 28,312.98, 39,072.36 and 15,566.72 is: 21,482.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.98 : 39,072.36 = 15,566.72 : x
  2. Step 2: Convert to fraction form
    28,312.98/39,072.36 = 15,566.72/x
  3. Step 3: Cross multiply
    28,312.98x = 39,072.36 × 15,566.72
  4. Step 4: Simplify right side
    28,312.98x = 608,228,487.86
  5. Step 5: Solve for x
    x = 608,228,487.86/28,312.98
  6. Step 6: Final answer
    x = 21,482.32

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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.