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Finding the Fourth Proportional to 14,401.60, 21,559.20 and 13,547.20

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Solution

The fourth proportional to 14,401.60, 21,559.20 and 13,547.20 is: 20,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,401.60 : 21,559.20 = 13,547.20 : x
  2. Step 2: Convert to fraction form
    14,401.60/21,559.20 = 13,547.20/x
  3. Step 3: Cross multiply
    14,401.60x = 21,559.20 × 13,547.20
  4. Step 4: Simplify right side
    14,401.60x = 292,066,794.24
  5. Step 5: Solve for x
    x = 292,066,794.24/14,401.60
  6. Step 6: Final answer
    x = 20,280.16

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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.