Home / 20,985.08-28,962.56-15,941.00

Finding the Fourth Proportional to 20,985.08, 28,962.56 and 15,941.00

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Solution

The fourth proportional to 20,985.08, 28,962.56 and 15,941.00 is: 22,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.08 : 28,962.56 = 15,941.00 : x
  2. Step 2: Convert to fraction form
    20,985.08/28,962.56 = 15,941.00/x
  3. Step 3: Cross multiply
    20,985.08x = 28,962.56 × 15,941.00
  4. Step 4: Simplify right side
    20,985.08x = 461,692,281.22
  5. Step 5: Solve for x
    x = 461,692,281.22/20,985.08
  6. Step 6: Final answer
    x = 22,000.98

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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.