Home / 14,763.63-20,358.35-9,721.40

Finding the Fourth Proportional to 14,763.63, 20,358.35 and 9,721.40

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Solution

The fourth proportional to 14,763.63, 20,358.35 and 9,721.40 is: 13,405.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,763.63 : 20,358.35 = 9,721.40 : x
  2. Step 2: Convert to fraction form
    14,763.63/20,358.35 = 9,721.40/x
  3. Step 3: Cross multiply
    14,763.63x = 20,358.35 × 9,721.40
  4. Step 4: Simplify right side
    14,763.63x = 197,911,718.95
  5. Step 5: Solve for x
    x = 197,911,718.95/14,763.63
  6. Step 6: Final answer
    x = 13,405.35

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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.