Home / 15,409,287.80-21,254,578.04-9,909,615.84

Finding the Fourth Proportional to 15,409,287.80, 21,254,578.04 and 9,909,615.84

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Solution

The fourth proportional to 15,409,287.80, 21,254,578.04 and 9,909,615.84 is: 13,668,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409,287.80 : 21,254,578.04 = 9,909,615.84 : x
  2. Step 2: Convert to fraction form
    15,409,287.80/21,254,578.04 = 9,909,615.84/x
  3. Step 3: Cross multiply
    15,409,287.80x = 21,254,578.04 × 9,909,615.84
  4. Step 4: Simplify right side
    15,409,287.80x = 210,624,703,217,700.16
  5. Step 5: Solve for x
    x = 210,624,703,217,700.16/15,409,287.80
  6. Step 6: Final answer
    x = 13,668,685.14

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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.