Home / 13,332.16-18,386.64-9,090.08

Finding the Fourth Proportional to 13,332.16, 18,386.64 and 9,090.08

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Solution

The fourth proportional to 13,332.16, 18,386.64 and 9,090.08 is: 12,536.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332.16 : 18,386.64 = 9,090.08 : x
  2. Step 2: Convert to fraction form
    13,332.16/18,386.64 = 9,090.08/x
  3. Step 3: Cross multiply
    13,332.16x = 18,386.64 × 9,090.08
  4. Step 4: Simplify right side
    13,332.16x = 167,136,028.53
  5. Step 5: Solve for x
    x = 167,136,028.53/13,332.16
  6. Step 6: Final answer
    x = 12,536.31

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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.