Home / 28,196.17-42,312.48-13,421.77

Finding the Fourth Proportional to 28,196.17, 42,312.48 and 13,421.77

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Solution

The fourth proportional to 28,196.17, 42,312.48 and 13,421.77 is: 20,141.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.17 : 42,312.48 = 13,421.77 : x
  2. Step 2: Convert to fraction form
    28,196.17/42,312.48 = 13,421.77/x
  3. Step 3: Cross multiply
    28,196.17x = 42,312.48 × 13,421.77
  4. Step 4: Simplify right side
    28,196.17x = 567,908,374.69
  5. Step 5: Solve for x
    x = 567,908,374.69/28,196.17
  6. Step 6: Final answer
    x = 20,141.33

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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.