Home / 28,750.68-39,665.16-16,810.20

Finding the Fourth Proportional to 28,750.68, 39,665.16 and 16,810.20

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Solution

The fourth proportional to 28,750.68, 39,665.16 and 16,810.20 is: 23,191.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,750.68 : 39,665.16 = 16,810.20 : x
  2. Step 2: Convert to fraction form
    28,750.68/39,665.16 = 16,810.20/x
  3. Step 3: Cross multiply
    28,750.68x = 39,665.16 × 16,810.20
  4. Step 4: Simplify right side
    28,750.68x = 666,779,272.63
  5. Step 5: Solve for x
    x = 666,779,272.63/28,750.68
  6. Step 6: Final answer
    x = 23,191.77

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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.