Home / 13,465.99-18,578.04-13,445.20

Finding the Fourth Proportional to 13,465.99, 18,578.04 and 13,445.20

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Solution

The fourth proportional to 13,465.99, 18,578.04 and 13,445.20 is: 18,549.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.99 : 18,578.04 = 13,445.20 : x
  2. Step 2: Convert to fraction form
    13,465.99/18,578.04 = 13,445.20/x
  3. Step 3: Cross multiply
    13,465.99x = 18,578.04 × 13,445.20
  4. Step 4: Simplify right side
    13,465.99x = 249,785,463.41
  5. Step 5: Solve for x
    x = 249,785,463.41/13,465.99
  6. Step 6: Final answer
    x = 18,549.36

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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.