Home / 9,421.02-13,001.16-5,172.48

Finding the Fourth Proportional to 9,421.02, 13,001.16 and 5,172.48

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Solution

The fourth proportional to 9,421.02, 13,001.16 and 5,172.48 is: 7,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.02 : 13,001.16 = 5,172.48 : x
  2. Step 2: Convert to fraction form
    9,421.02/13,001.16 = 5,172.48/x
  3. Step 3: Cross multiply
    9,421.02x = 13,001.16 × 5,172.48
  4. Step 4: Simplify right side
    9,421.02x = 67,248,259.47
  5. Step 5: Solve for x
    x = 67,248,259.47/9,421.02
  6. Step 6: Final answer
    x = 7,138.11

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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.