Home / 28,225.08-42,254.37-20,862.45

Finding the Fourth Proportional to 28,225.08, 42,254.37 and 20,862.45

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Solution

The fourth proportional to 28,225.08, 42,254.37 and 20,862.45 is: 31,232.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.08 : 42,254.37 = 20,862.45 : x
  2. Step 2: Convert to fraction form
    28,225.08/42,254.37 = 20,862.45/x
  3. Step 3: Cross multiply
    28,225.08x = 42,254.37 × 20,862.45
  4. Step 4: Simplify right side
    28,225.08x = 881,529,681.41
  5. Step 5: Solve for x
    x = 881,529,681.41/28,225.08
  6. Step 6: Final answer
    x = 31,232.14

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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.