Home / 15,555.61-21,459.91-10,518.01

Finding the Fourth Proportional to 15,555.61, 21,459.91 and 10,518.01

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Solution

The fourth proportional to 15,555.61, 21,459.91 and 10,518.01 is: 14,510.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.61 : 21,459.91 = 10,518.01 : x
  2. Step 2: Convert to fraction form
    15,555.61/21,459.91 = 10,518.01/x
  3. Step 3: Cross multiply
    15,555.61x = 21,459.91 × 10,518.01
  4. Step 4: Simplify right side
    15,555.61x = 225,715,547.98
  5. Step 5: Solve for x
    x = 225,715,547.98/15,555.61
  6. Step 6: Final answer
    x = 14,510.23

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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.