Home / 28,005.02-42,000.24-13,210.02

Finding the Fourth Proportional to 28,005.02, 42,000.24 and 13,210.02

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Solution

The fourth proportional to 28,005.02, 42,000.24 and 13,210.02 is: 19,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.02 : 42,000.24 = 13,210.02 : x
  2. Step 2: Convert to fraction form
    28,005.02/42,000.24 = 13,210.02/x
  3. Step 3: Cross multiply
    28,005.02x = 42,000.24 × 13,210.02
  4. Step 4: Simplify right side
    28,005.02x = 554,824,010.40
  5. Step 5: Solve for x
    x = 554,824,010.40/28,005.02
  6. Step 6: Final answer
    x = 19,811.59

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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.