Home / 15,527.88-21,421.80-10,355.40

Finding the Fourth Proportional to 15,527.88, 21,421.80 and 10,355.40

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Solution

The fourth proportional to 15,527.88, 21,421.80 and 10,355.40 is: 14,286.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.88 : 21,421.80 = 10,355.40 : x
  2. Step 2: Convert to fraction form
    15,527.88/21,421.80 = 10,355.40/x
  3. Step 3: Cross multiply
    15,527.88x = 21,421.80 × 10,355.40
  4. Step 4: Simplify right side
    15,527.88x = 221,831,307.72
  5. Step 5: Solve for x
    x = 221,831,307.72/15,527.88
  6. Step 6: Final answer
    x = 14,286.00

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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.