Home / 15,547.20-21,405.60-14,487.36

Finding the Fourth Proportional to 15,547.20, 21,405.60 and 14,487.36

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Solution

The fourth proportional to 15,547.20, 21,405.60 and 14,487.36 is: 19,946.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.20 : 21,405.60 = 14,487.36 : x
  2. Step 2: Convert to fraction form
    15,547.20/21,405.60 = 14,487.36/x
  3. Step 3: Cross multiply
    15,547.20x = 21,405.60 × 14,487.36
  4. Step 4: Simplify right side
    15,547.20x = 310,110,633.22
  5. Step 5: Solve for x
    x = 310,110,633.22/15,547.20
  6. Step 6: Final answer
    x = 19,946.40

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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.