Home / 30,817.59-42,549.08-20,225.22

Finding the Fourth Proportional to 30,817.59, 42,549.08 and 20,225.22

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Solution

The fourth proportional to 30,817.59, 42,549.08 and 20,225.22 is: 27,924.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,817.59 : 42,549.08 = 20,225.22 : x
  2. Step 2: Convert to fraction form
    30,817.59/42,549.08 = 20,225.22/x
  3. Step 3: Cross multiply
    30,817.59x = 42,549.08 × 20,225.22
  4. Step 4: Simplify right side
    30,817.59x = 860,564,402.67
  5. Step 5: Solve for x
    x = 860,564,402.67/30,817.59
  6. Step 6: Final answer
    x = 27,924.45

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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.