Home / 15,280.02-21,090.91-9,975.63

Finding the Fourth Proportional to 15,280.02, 21,090.91 and 9,975.63

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Solution

The fourth proportional to 15,280.02, 21,090.91 and 9,975.63 is: 13,769.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,280.02 : 21,090.91 = 9,975.63 : x
  2. Step 2: Convert to fraction form
    15,280.02/21,090.91 = 9,975.63/x
  3. Step 3: Cross multiply
    15,280.02x = 21,090.91 × 9,975.63
  4. Step 4: Simplify right side
    15,280.02x = 210,395,114.52
  5. Step 5: Solve for x
    x = 210,395,114.52/15,280.02
  6. Step 6: Final answer
    x = 13,769.30

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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.