Home / 14,587.20-21,880.80-12,254.40

Finding the Fourth Proportional to 14,587.20, 21,880.80 and 12,254.40

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Solution

The fourth proportional to 14,587.20, 21,880.80 and 12,254.40 is: 18,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,587.20 : 21,880.80 = 12,254.40 : x
  2. Step 2: Convert to fraction form
    14,587.20/21,880.80 = 12,254.40/x
  3. Step 3: Cross multiply
    14,587.20x = 21,880.80 × 12,254.40
  4. Step 4: Simplify right side
    14,587.20x = 268,136,075.52
  5. Step 5: Solve for x
    x = 268,136,075.52/14,587.20
  6. Step 6: Final answer
    x = 18,381.60

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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.